Grade 9
72 Units, 212 Skills
Geometry - Angles and Transformations - Practice
Unit 1
Fraction Multiplication - Practice
Unit 2
Exponents - Advanced
Unit 3
Order of Operations - Advanced
Unit 4
Probability and Counting - Single Event - Advanced
Unit 5
Probability and Statistics - Counting and Probability Foundations
Unit 6
Fraction Division - Intro
Unit 7
Geometry - Circle Area and Circumference - Practice
Unit 8
Geometry - Isosceles and Equilateral Triangles
Unit 9
Digits and Divisibility - Practice
Unit 10
Decimal Multiplication - Advanced
Unit 11
Geometry - Intersecting, Parallel, and Perpendicular Lines
Unit 12
Fraction Addition and Subtraction - Advanced
Unit 13
Decimal Division - Advanced
Unit 14
Fraction Addition and Subtraction, Mixed - Practice
Unit 15
Exponents - Multiplication and Division - Advanced
Unit 16
Geometry - Circle Partial Area and Circumference - Intro
Unit 17
Patterning - Number Patterns Advanced
Unit 18
Measurement - Units Advanced - Metric
Unit 19
Geometry - Surface Area of 3D Shapes - Practice
Unit 20
Factoring and Greatest Common Factor - Advanced
Unit 21
Algebra Manipulating Variables - Intro
Unit 22
Geometry - Cylinders - Intro
Unit 23
Probability and Statistics - Counting and Probability Practice
Unit 24
Percentages - Advanced
Unit 25
Measurement - Unit Conversion Intro - Metric
Unit 26
Speed, Distance, and Time - Advanced
Unit 27
Ratios of Lengths - Intro
Unit 28
Cartesian Grid Geometry Logic - Practice
Unit 29
Percents and Simple Interest - Practice
Unit 30
Squares and Square Roots - Advanced
Unit 31
Area and Perimeter Logic - Practice
Unit 32
Slope - Intro
Unit 33
Algebra Basic Concepts - Advanced
Unit 34
Factoring and Lowest Common Multiple - Advanced
Unit 35
Probability and Statistics - Mean, Median, and Mode - Advanced
Unit 36
Geometry - Volume Logic with 3D Shapes - Intro
Unit 37
Scientific Notation - Multiplication and Division - Intro
Unit 38
Pythagoras - Intro
Unit 39
Negative Integers - Practice
Unit 40
Speed, Distance, and Time Logic Challenges - Intro
Unit 41
Factoring, Multiplication, Division, Fractions - Practice
Unit 42
Pythagorean Triples - Intro
Unit 43
Cartesian Grid Distance - Intro
Unit 44
Probability and Statistics - Factorial Form Intro
Unit 45
Exponents - Power Law - Practice
Unit 46
Pythagorean Theorem with Decimals - Intro
Unit 47
Algebra Manipulating Variables - Practice
Unit 48
Exponents - Negative Bases and Exponents - Intro
Unit 49
Exponents - Fractional Bases and Exponents - Intro
Unit 50
Algebra Systems of Equations - Intro
Unit 51
Measurement - Units Large/Small Intro - Metric
Unit 52
Pythagoras - Practice
Unit 53
Factoring, Multiplication, Division, Fractions - Advanced
Unit 54
Slopes and Parallels - Intro
Unit 55
Measurement Conversion and Map Scale - Intro - Metric
Unit 56
Probability - Set Operations - Intro
Unit 57
Patterns and Sums - Intro
Unit 58
Slopes and Perpendiculars - Intro
Unit 59
Geometry - Circle Area, Sectors and Donuts - Intro
Unit 60
Fraction Multiplication - Advanced
Unit 61
Measurement - Unit Conversion Practice - Metric
Unit 62
Pythagorean Theorem in 3D - Intro
Unit 63
Fraction Addition and Subtraction, Mixed - Advanced
Unit 64
Probability and Counting - Multiple Events - Intro
Unit 65
Ratios of Lengths - Practice
Unit 66
Radicals - Simplifying Intro
Unit 67
Fraction Division - Practice
Unit 68
Scientific Notation - Multiplication and Division - Practice
Unit 69
Geometry - Intermediate - Intro
Unit 70
Line Equations and Graphing - Intro
Unit 71
Probability and Statistics - Probability with Factorials Intro
Unit 72
This math unit begins by advancing students' understanding of circle parts, including components like the center, radius, and tangent. It then progresses to focus on extracting and applying basic geometrical rules such as finding the diameter from the radius and vice versa. The unit advances into more complex concepts involving angles within circles: exploring the relationship between central and inscribed angles, and examining properties of triangles inscribed in circles. Later, the unit delves into calculating and understanding intersected arcs from given angles, highlighting how angles and arcs interact within circle geometry. Lastly, it covers the tangent angle rule through various problem-solving scenarios, using specific angles formed where a tangent meets a circle. Overall, this progression from identification and basic measurements to applied geometric principles provides a comprehensive journey through circle geometry at an intermediate level.Skills you will learn include:
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Central Angle from Inscribed (Level 2)
This math topic focuses on the geometry of circles, specifically on understanding the relationship between central and inscribed angles. Students are tasked with solving problems that require calculating unknown angles based on given inscribed angles within various circle diagrams. Each question provides a numerical measure of an inscribed angle, and multiple choice answers for the corresponding central angle. These problems are designed to enhance students' skills in geometric reasoning and the properties of circles at an intermediate level.
moreThis math topic focuses on identifying various parts of a circle through a series of True/False questions. Students are asked to differentiate between circle components such as sectors, radii, tangents, arcs, and the center. This enhances their understanding of circle geometry and sharpens their ability to visually identify specific segments and points in a circle, which is a fundamental aspect of intermediate geometry. Each question provides a visual representation of a circle with a specific part highlighted, and the student must decide whether the statement about the identified part is true or false.
moreThis math topic focuses on identifying different parts of a circle, and is structured using advanced true/false questions. Each question displays an image of a circle with a specific part highlighted, and students must determine whether the identified part is correctly labeled (e.g., tangent, radius, segment, chord, arc, or center). This is part of an intermediate geometry introduction, designed to enhance students' understanding of circle geometry.
moreLevel 1
This math topic focuses on advanced understanding of circle parts such as the center, radius, segment, tangent, arc, circumference, chord, sector, and diameter. Through a series of identification questions, learners are tasked with naming specific parts of a circle based on visual cues provided by images. This is a higher-level exercise within a unit on intermediate introductory geometry, aimed at enhancing the learner’s ability to visually discern and name various components of a circle.
moreArc to Subtended Angle Definition (Level 1)
This math topic focuses on the Geometry of Circles, specifically on defining and identifying angles that are subtended by various arcs in a circle. Students are presented with multiple-choice questions where they must determine which angle corresponds to the designated arc. This activity is designed to develop the understanding of circle geometry, enhance visualization skills, and improve geometrical reasoning, making it suitable for intermediate-level students starting to explore deeper concepts in geometry. Each question incorporates an image of a circle with labeled points, and students identify the correct angle created by the arcs between these points.
moreSubtended Angle to Arc Definition (Level 1)
This math topic explores the concept of a subtended angle and the arc it creates in various circle diagrams. Students are presented with problems where they must determine which arc is subtended by a given angle. Each problem features a diagram of a circle with labeled points and angles, and multiple-choice options for the students to select the correct arc corresponding to the subtended angle. This practice emphasizes understanding the geometric relationships between angles and arcs in circles.
moreLevel 1
This math topic focuses on understanding the relationship between the diameter and the radius of a circle. The problems require students to determine what is known about a circle's diameter given its radius, reinforcing the fundamental geometry concept that the diameter is twice the length of the radius. Each question is structured around a different circle, providing practice in applying this rule across various scenarios within the context of geometry at an intermediate introduction level.
moreLevel 2
This math topic explores the relationship between the diameter and radius of a circle. The problems revolve around determining properties of the diameter given the radius, an essential concept in geometry. Each question proposes different scenarios where learners must identify how the length of the diameter compares or combines with the length of the radius, reinforcing fundamental geometry principles. Learners are required to apply knowledge of circle properties, specifically understanding that the diameter is typically twice the radius. This topic is part of an introductory geometry unit that helps students build foundational geometry skills.
moreLevel 1
This math topic focuses on understanding the relationship between the diameter and radius of circles. It primarily tests the ability to identify that the radius is half the diameter of a circle. Each question presents a diagram of a circle with labeled points and asks what is known about the radius given the diameter. The possible answers vary, with the correct answer typically being that the radius is half of the diameter. This set of problems is part of a beginner's introduction to geometry, specifically dealing with circles.
moreLevel 2
This math topic focuses on understanding the relationship between the diameter and the radius of circles. It features a series of problems where the primary task is to determine properties of the radius given the diameter of various circles. Each question presents different hypothetical circle diagrams with labeled points, posing queries about how the radius and diameter are related, such as whether the radius is half, twice, or unrelated to the measure of the diameter. The problems are structured as multiple-choice questions, enhancing students' ability to analyze and apply geometric rules regarding circle dimensions.
moreRule for Inscribed Angle from Diameter (Level 1)
This math topic focuses on the rule for inscribed angles in circles, particularly when one side of the angle forms a diameter. Students are asked to determine the measure of various inscribed angles based on the premise that the line segment forming these angles is a diameter. The consistent theme across the provided problems is understanding and applying the knowledge that an angle inscribed in a semicircle is a right angle. Each question presents multiple-choice answers, where students need to identify the correct degree measure of the angle, usually highlighting the rule that such an angle measures 90 degrees.
moreInscribed Angle from Diameter (Level 1)
This math topic covers problems related to the "Geometry of Circles," specifically focusing on the concept of inscribed angles that originate from a diameter. The skill practiced involves finding the measure of angles that are inscribed by the endpoints of a diameter, a fundamental concept in circle geometry. Each problem presents a different setup involving a circle with a designated diameter and an angle measure to be determined, providing variety in applying the inscribed angle theorem. The worksheet includes multiple-choice answers for students to select their response based on their geometric calculations.
moreNaming - Degrees to ABC Form on a Triangle (Level 1)
This math topic involves practicing naming angles and converting degrees to ABC form within a triangle. It includes intermediate level geometry and introduces the concept of identifying angles of specific measurements such as 60°, 50°, and 70°. The learners will recognize and name these angles using a three-letter form like RSQ, SQR, SRQ, etc. Multiple-choice-style answers are provided for practice.
moreNaming - ABC Form to Degrees on a Triangle (Level 1)
This math topic focuses on determining the degree measurements of angles within triangles. Students are given images of triangles with labeled points, and are tasked with finding the amounts of particular angles, represented in the ABC form. The problems present students with angles ranging from 50 to 70 degrees, providing multiple choice responses. This is part of a larger unit on introductory intermediate geometry.
moreRule for Inscribed Angle from Central (Level 1)
This math topic explores the geometric principle involving the relationship between central angles and inscribed angles in a circle, at an intermediate introductory level. It includes multiple-choice questions that challenge students to identify the relationship between pairs of angles subtended by the same arc or different arcs. For each question, students are given various options such as angles being equal, one being twice or half of the other, angles adding up to certain degrees, or having no relation due to different arcs. These problems facilitate understanding and application of the inscribed angle theorem and its implications in circle geometry.
moreInscribed Triangle on Diameter - Missing Angle Rule (Level 1)
This math topic focuses on the geometry of circles, specifically problems involving inscribed triangles with diameters and the relationships of their angles. Students are tasked with determining properties and relationships of angles subtended by diameters in various geometric configurations. The topic also challenges learners to deepen their understanding of the circle geometry, including how angles in inscribed triangles relate to one another and the circle's diameter. Each problem presents different cases of inscribed angles and related angle properties, crucial for learning intermediate level geometry.
moreRule for Central Angle from Inscribed (Level 1)
This topic focuses on understanding the relationships between angles in the context of circle geometry, specifically exploring the rule for central angles and inscribed angles. Learners are asked to determine properties and relationships of various angles that are either central or inscribed, often comparing one to another based on their position relative to a circle. The questions involve identifying whether angles are the same, add up to certain values like 90° or 180°, or have a multiplicative relationship (half or twice the size of another). This involves critical thinking and a clear understanding of the geometric properties related to circles.
moreInscribed Triangle on Diameter - Missing Angle (Level 1)
This math topic focuses on the geometry of circles, specifically working with inscribed triangles where one side is the diameter. The main skill practiced is solving for missing angles within these triangles. Each problem presents a different triangle inscribed in a circle, with one angle given and the student required to find another. The problems invite the student to apply the theorem that a triangle inscribed in a circle and subtended by the diameter is a right triangle. Various angle values are presented in a multiple-choice format for students to select the correct answer.
moreInscribed Angle from Central (Level 1)
This math topic focuses on the geometry of circles, specifically the relationship between inscribed angles and central angles. It helps learners understand how to relate these two types of angles within a circle through a series of problems. Each question requires finding the measure of an inscribed angle given the measurement of the corresponding central angle, enhancing students' skills in using properties of angles in circles and applying them to solve geometry problems.
moreInscribed Triangle on Diameter - Missing Angle (Level 2)
This math topic focuses on solving problems related to inscribed triangles in circles, where one side of the triangle is a diameter. Specifically, it involves finding the missing angle of the triangle using properties from circle geometry. Each question presents a triangle with one known angle and requires calculating the second angle, exploiting the theorem that an angle inscribed in a semicircle is a right angle (90 degrees). The topic is suitable for learners at an intermediate level in geometry.
moreCentral Angle from Inscribed (Level 1)
This math topic explores the relationships between central angles and inscribed angles in a circle, focusing specifically on calculating central angles when given corresponding inscribed angles. Each of the problems presents a different circle configuration, and learners are tasked with finding specific central angles based on the given inscribed angles. The set of answers for each question requires learners to understand and apply theorems relating to angles in circles, ensuring a deeper comprehension of circle geometry at an intermediate level.
moreRule for Inscribed Angle from Intersected Arc (Level 1)
This math topic focuses on the geometric properties of circles, specifically the relationship between inscribed angles and the arcs they intersect. Students are required to apply and interpret the rule that an inscribed angle is half the measure of its intercepted arc, or variations of this rule. They are presented with diagrams of circles containing various points and arcs and are asked to compare the angular measurements of inscribed angles to the lengths of the corresponding arcs. Each problem presents multiple-choice answers, challenging students to distinguish correct relationships in the context of circle geometry.
moreInscribed Angle from Central (Level 2)
This math topic focuses on the geometry of circles, specifically the relationship between inscribed angles and their corresponding central angles. It challenges learners to calculate the measures of various inscribed angles based on given central angles within different circle configurations. The problems are presented with multiple-choice answers, enabling practice in applying geometric principles to solve for unknown angles in a circle's context at an intermediate level. This practice is part of a broader introductory unit on intermediate geometry.
moreRule for Intersected Arc from Inscribed Angle (Level 1)
This math topic focuses on the relationships between angles and arcs in circle geometry. Specifically, it explores the rules governing the lengths of intersected arcs relative to inscribed angles. Problems are designed to assess understanding of how arc measures compare to the angles subtending them, including direct equality, halves, doubles, and their additive complements to 90°, 180°, and 360°. Each question presents a different configuration within a circle, requiring analysis of arcs and angles to determine their mathematical relationship.
moreInscribed Angle from Intersected Arc (Level 1)
This math topic focuses on the geometry of circles, specifically dealing with the relationships and calculations involving inscribed angles and their intersected arcs. Skills being practiced include understanding and computing the measurements of angles formed when two points on a circle's circumference are connected by a chord that intersects at another point on the circumference, given the degree measure of the arc intercepted by the angle. These problems are designed to enhance comprehension of geometric properties associated with circles, enhancing students' ability to work through and apply fundamental concepts in circle geometry.
moreIntersected Arc from Inscribed Angle (Level 1)
This math topic focuses on finding the lengths of intersected arcs from given inscribed angles in circles. It includes multiple problems where students use knowledge from geometry to determine the measurement of the arc corresponding to a specified inscribed angle. Each question presents a different circle configuration and requires the application of the theoretical principles of circle geometry concerning arcs and angles.
moreInscribed Angle from Intersected Arc (Level 2)
This math topic focuses on solving problems related to the geometry of circles, specifically calculating inscribed angles from given intersected arcs. The problems require users to find the measure of an angle based on the degrees of the arc opposite the angle. These exercises are designed for students with intermediate knowledge of geometry and provide a practical application of the Inscribed Angle Theorem, which states that the inscribed angle is half the measure of its intercepted arc. The questions include multiple-choice answers, enhancing the problem-solving skills needed to determine and verify the correct inscribed angle values.
moreIntersected Arc from Inscribed Angle (Level 2)
This math topic focuses on calculating the lengths of intersected arcs within circles, determined from provided inscribed angles. It encompasses a series of problems where each asks to find the arc length in degrees based on a given angle. Each problem provides multiple-choice answers. This topic is part of an intermediate introduction to geometry, specifically dealing with the geometry of circles. Each question includes a visual representation (diagram) of the circle with marked arcs and angles to aid in solving the problem.
moreTangent Angle - Rule (Level 1)
This math topic focuses on the geometry of circles, specifically examining the tangent angle rule. It includes various problems that require determining the properties of an angle formed at the point where a tangent meets a circle. Each question presents a different diagram where a tangent intersects a circle, and students must identify the measure of a specific angle based on this geometric configuration. The options given generally include angles like 90°, 45°, 60°, and 180°, inviting students to apply their understanding of the tangent angle theorem in geometry.
moreTangent Angle (Level 1)
This math topic focuses on the Geometry of Circles, specifically exploring how tangent lines interact with angles within circles. It includes multiple problems (seven total), each requiring the calculation of different angles formed when a line tangent to a circle meets another line or segment. Students must determine the values of these angles, given limited information and a diagram for each problem. This type of exercise helps in understanding geometric properties and relationships involving circles, tangents, and angles, suitable for intermediate level students.
moreTangent Angle (Level 2)
This math topic focuses on the geometry of circles, specifically involving calculations related to tangent angles. It offers intermediate-level practice on angles formed by tangents to circles. The problems require students to find the values of specific angles when a line segment forms a tangent to a circle, using given multiple-choice answers. Each question provides an image illustrating the geometric setup and a set of potential angles as answers. This set of problems enhances the understanding of the properties and relations of tangents to a circle in geometric configurations.
moreThis math topic focuses on identifying and understanding various parts of a circle. It aims to advance students' knowledge within the broader context of intermediate geometry. The questions seek to clarify the definitions and uses of different circle components, such as sectors, radii, the center, tangents, and arcs. Multiple-choice questions are employed to assess understanding, with correct terminology and distractor terms presented as possible answers, enhancing recognition and deepening knowledge of circle geometry concepts.
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