8P.2.1.1.2: Construct and interpret graphical displays of data to describe the…

Forces and Motion: Crash, Push and Stop Grade 8 · partly supports this outcome

Why you lurch forward when the bus brakes, how fast a toy car really goes, why heavier carts hit harder, and how to build a crumple zone that saves an egg. Four lessons on inertia, speed, mass and stopping safely.

• How fast is a toy car really going? 50–60 min

  Teams time a toy car over measured distances from two ramp heights, calculate its speed and draw distance-time graphs. They use the slope of their graphs to argue which run was faster, and convert a toy car's speed to a real car's.

• Why does a heavier cart hit harder? 50–60 min

  Teams load a toy car with coins, roll it down the same ramp into a paper cup and measure how far the cup slides. They graph mass against slide distance and explain, with momentum, why a loaded truck is harder to stop than a small car.

Printable practice for 8P.2.1.1.2

These pages practise a closely related idea; the match to 8P.2.1.1.2 is partial.

• Forces and Motion: Crash, Push and Stop workbook included with the unit

  1 word wall, 1 English-support page, 1 practice page, 1 reading, 1 unit review, 1 unit test, with answer keys.

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