How To Make An Anemometer

STEP 1: Use the hole puncher to make two holes across from each other, in each of your cups.

STEP 2: Push the straw through the holes so that you have two cups on each straw (all must face the same direction).

STEP 3: Push your nail through each straw and then into the eraser of your pencil. Put the pencil into the cup.

STEP 4: Tape the intersection of the two straws.

STEP 5: Take outside on a windy day and see what happens! How fast is the wind moving?

Swipe up for the step by step guide!