Unit 1 Activity 1: Interactions and Motion To show and then play a movie, click on the arrow or the movie title/description. Repeat to hide it. Exploration #1, STEP 7: Slow-motion video of cart being given a quick pull to start it moving. Exploration #1, STEP 7: Slow-motion video of cart being given a quick pull to start it moving. Return to Unit 1 Resources Page Copyright © 2020 LEAP