Their physical characteristics are different. The larva does not have eggs at first. Tadpoles eat plants. Frogs eat insects. Tadpoles live in the water.
Frogs spend some time on land.
Make a frog mask. Show pictures of a frog using his tongue to get insects. Discuss the importance of the tongue. Cut away the top and bottom edges of a paper plate to make a frog face. Carefully cut out two eye holes.