This easy worksheet introduces six new science words through tracing practice: shell, wing, reptile, gills, beak, and claw. First graders then complete four fill in the blank sentences about a frog being an amphibian, snakes being reptiles, birds using wings to fly, and a fish breathing with gills. Three true or false questions about turtles, insect legs, and mammal mothers feeding milk wrap up the page, helping children connect each animal to the body part that puts it in its group.