To show and then play a movie, click on the arrow or the movie title/description. Repeat to hide it.
Exploration 1 STEP 1: Clear sharp image on screen
Exploration 1 STEP 2: Removing lens
Exploration 2 STEPs 1-3: Covering up different parts of lens
Exploration 2 STEP 4: Slowly covering up lens
Exploration 2 STEP 4: Covering up lens
Exploration 3 STEP 1: Large hole in front of lens
Exploration 3 STEP 2: Large hole behind lens
Exploration 3 STEP 3: Large hole behind lens moving card toward screen
Exploration 3 STEP 4: Large hole covering different parts of lens
Exploration 3 STEP 5: Repeating STEPS 1-4 with a small hole
Exploration 4: Seeing how many locations produce an image
Exploration 5 STEP 1: Is image visible without a screen? LENS
Exploration 5 STEP 2: Is image visible without a screen? CONCAVE MIRROR
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