Math Curriculum

Level D
Unit: Ratios and Proportions
Key Lesson 6.2.9 Constant Speed

Lesson topic: Introduction to unit rate concepts

Instructor Materials

  • Teacher guide
  • Slides
  • Practice Problems resource
  • CCRS standard: 6.RP.3b
  • Learning goal: Calculate the distance an object travels in 1 unit of time and express it using a phrase like “meters per second” (orally and in writing). For an object moving at a constant speed, use a double number line diagram to represent equivalent ratios between the distance traveled and elapsed time. Justify (orally and in writing) which of two objects is moving faster, by identifying that it travels more distance in the same amount of time or that it travels the same distance in less time.
  • 6.2 Assessment and Practice Problems

Student Materials

Related Lessons

Review and Extend

Use these supplemental lessons if needed after teaching this key lesson.




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