This topic focuses on comparing speeds when distances and times are given in the same units. Students must determine which of two entities is moving faster based on given measurements. The context involves various subjects such as bacteria, horses, spaceships, and bugs. Each item's speed can be determined by calculating how much distance it covers in a specified time, and students are then asked to compare these speeds to find out which is faster. This practice is an introduction to understanding and calculating speed within the broader context of speed, distance, and time.
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Bacteria A moves 3cm in 8d. Bacteria B moves 5cm in 7d. Which is faster?