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Grade 9

68 Units, 194 Skills

Geometry - Angles and Transformations - Practice

Unit 1

Measurement - Units Advanced - Metric

Unit 2

Fraction Multiplication - Practice

Unit 3

Exponents - Advanced

Unit 4

Order of Operations - 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

Squares and Square Roots - Advanced

Unit 14

Decimal Division - Advanced

Unit 15

Fraction Addition and Subtraction, Mixed - Practice

Unit 16

Exponents - Multiplication and Division - Advanced

Unit 17

Unit Conversion - Intro

Unit 18

Geometry - Circle Area, Sectors and Donuts - Intro

Unit 19

Patterning - Number Patterns Advanced

Unit 20

Measurement - Units Large/Small Practice - Metric

Unit 21

Geometry - Surface Area of 3D Shapes - Practice

Unit 22

Factoring and Greatest Common Factor - Advanced

Unit 23

Algebra Manipulating Variables - Intro

Unit 24

+2

Geometry - Cylinders - Intro

Unit 25

Probability and Statistics - Counting and Probability Practice

Unit 26

Percentages - Advanced

Unit 27

Measurement - Unit Conversion (Very Large and Small) Intro - Metric

Unit 28

Speed, Distance, and Time - Advanced

Unit 29

Ratios of Lengths - Intro

Unit 30

Cartesian Grid Geometry Logic - Practice

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

Cartesian Grid Distance - Intro

Unit 43

Probability and Statistics - Factorial Form Intro

Unit 44

Pythagorean Triples - Intro

Unit 45

Exponents - Power Law - Practice

Unit 46

Algebra Manipulating Variables - Practice

Unit 47

Exponents - Negative Bases and Exponents - Intro

Unit 48

Exponents - Fractional Bases and Exponents - Intro

Unit 49

Algebra Systems of Equations - Intro

Unit 50

Measurement - Units Large/Small Advanced - Metric

Unit 51

Pythagoras - Practice

Unit 52

Factoring, Multiplication, Division, Fractions - Advanced

Unit 53

Probability - Set Operations - Intro

Unit 54

Patterns and Sums - Intro

Unit 55

Fraction Multiplication - Advanced

Unit 56

Measurement - Unit Conversion (Very Large and Small) Practice - Metric

Unit 57

Pythagorean Theorem in 3D - Intro

Unit 58

Fraction Addition and Subtraction, Mixed - Advanced

Unit 59

Probability and Counting - Multiple Events - Intro

Unit 60

Ratios of Lengths - Practice

Unit 61

Radicals - Simplifying Intro

Unit 62

Fraction Division - Practice

Unit 63

Scientific Notation - Multiplication and Division - Practice

Unit 64

Geometry - Intermediate - Intro

Unit 65

Line Equations and Graphing - Intro

Unit 66

Scientific Notation Units - Intro

Unit 67

Probability and Statistics - Probability with Factorials Intro

Unit 68

Geometry - Circle Area and Circumference - Practice

Unit 8

This math unit begins by introducing students to the basic geometry of circles, focusing initially on calculating the circumference using the diameter and the radius. It then advances to include calculations involving a calculator and understanding the mathematical constant Pi (π), which is integral to circle geometry. As the unit progresses, the emphasis shifts towards the more complex area calculations of a circle, starting from using either its diameter or radius. Here, students learn to express these areas in terms of pi, furthering their application of pi in practical scenarios. The exercises evolve from employing basic formulas to more demanding tasks that require estimating and approximating pi, both with and without the use of calculators. This progression not only strengthens their operational skills but also deepens their understanding of how circle measurements relate to real-world applications, thus providing a comprehensive overview of circle geometry.

Skills you will learn include:

Foundational Units
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Learning through Game Play

At Mobius we have lots of great (and free) resources to help you learn math. To keep kids engaged, there’s nothing better than a math-powered video game! Try out a Mobius game mapped to Geometry - Circle Area and Circumference - Practice.

This math topic focuses on calculating the circumference of a circle given its diameter. It encourages practicing the formula...

This math topic focuses on calculating the circumference of a circle given the radius, utilizing a calculator. Geared towards...

This math topic focuses on the skill of calculating the diameter of a circle from a given radius. It involves applying the...

This math topic involves practicing how to calculate the circumference of a circle using a calculator. Each question presents...

This math topic focuses on calculating the circumference of a circle given its radius, expressing the results as a function...

This math topic helps students practice finding the radius of a circle when provided with the circle's circumference. It...

This math topic involves computing the circumference of a circle using the radius provided in each question, emphasizing...

This topic focuses on developing students' understanding of the concept of 'Area of a Circle'. Each question requires students...

This topic is focused on the calculation of the area of a circle using the diameter. It's a fundamental aspect of Geometry,...

This math topic focuses on practicing the approximation of numbers multiplied by π (Pi, approximately 3.14). It is structured...

This math topic focuses on learning how to find the radius of a circle from its diameter. It is intended for those beginning...

This math topic focuses on calculating the area of a circle. The learners are expected to solve various problems to find...

This topic focuses on practicing the multiplication of various numbers by the mathematical constant Pi (π), using its approximate...

This math topic focuses on the concept of calculating the area of a circle given its diameter. The practice problems, which...

This math topic covers the area of a circle, a subtopic in Geometry. It involves calculating the area of circles of different...

This math topic focuses on practicing the calculation of circle circumferences given their radii. It reinforces understanding...

This math topic, labeled as "Circumference - Diameter to Equation," is designed to help students practice calculating the...

This math topic focuses on identifying various parts of a circle. It includes questions where learners must name different...

This math topic covers finding the radius of a circle given its diameter, enhancing skills in elementary geometry. As part...

This math topic focuses on calculating the area of a circle, given the radius, using the formula \( \pi \times \text{radius}^2...

This math topic focuses on the area of a circle, specifically calculating it from the diameter. It's part of a broader unit...

This math topic focuses on calculating the area of a circle using the radius and the mathematical constant π (pi). Learners...

This math topic focuses on calculating the circumference of circles, which is an integral part of geometry concerned with...

This math topic covers the skill of calculating the area of a circle using the value of π (pi). It is designed for learners...

This math topic focuses on calculating the area of a circle as a function of π. It begins with introductory geometry concepts...

This math topic focuses on approximating products involving the mathematical constant Pi (π), using π = 3.14 for calculations....

This math topic focuses on calculating the area of a circle using the radius. It's part of a broader unit on introductory...

This topic focuses on practicing the skill of multiplying various numbers by the mathematical constant Pi (π) approximately...

This math topic focuses on calculating the area of a circle from its diameter using the value of Pi (π). It's suitable for...

This math topic focuses on solving problems related to finding the diameter of a circle when given the circumference. It...

This is a math topic centered on learning and practicing the calculation of the area of a circle from its radius. It is a...

This math topic practices the skill of finding the area of a circle in terms of Pi (π). It is part of a broader unit on the...

This math topic focuses on calculating the circumference of circles, an essential aspect of geometry involving circle area...

This math topic focuses on calculating the circumference of a circle given the diameter, aimed at introductory learning in...

This math topic focuses on finding the circumference of a circle as a function of π. It involves using the circle's diameter...

This math topic focuses on calculating the area of a circle using its diameter and expressing the answer in terms of pi (π)....

This math topic focuses on calculating the circumference of circles, expressed in terms of π (pi). It is aimed at developing...

This math topic focuses on calculating the circumference of a circle given its diameter, leveraging the use of a calculator....

This math topic focuses on practicing how to find the circumference of a circle given its radius. It enables students to...

This math topic focuses on practicing the approximation of multiplying various numbers by Pi (π), an essential skill for...