About this worksheet
A 6-page 4th grade investigation for NGSS 4-PS3-1. Students roll a marble down a ramp propped on 1, 2 and 3 books into an upside-down paper cup, then measure how far the cup slides in centimeters. They write an if-then prediction, run three trials at each height, find the averages and draw a bar graph. Sample data (averages of 12, 24 and 38 cm) covers classes that cannot run the test. A claim, evidence, and reasoning frame and a fair test question come last, and the answer key works through the sample data.
