1. Living Systems IV Second Grade
Brenda Rone, Susan Gentry, and Bridgett Niedringhaus
Hazelwood School District

2. VII Living Systems A. Structure, Function, and Characteristics
These lessons are designed to reinforce:
State Science Standard 3
VII Living Systems
A. Structure, Function, and Characteristics
B. Life Processes
C. Diversity
D. Reproduction
E. Adaptation and Evolution

3. Second Grade, Show Me Standard, Science 3
Teacher Page
Second Grade, Show Me Standard, Science 3
The elements of Living Systems are integrated in the activities.
We suggest that students keep a journal.
It is critical for students to use writing skills to explain answers. When you see this symbol students should use their journals.
Please take time to discuss possible answers.
Click to go to next screen.

4. Life Cycle
Activity 1

5. Life Cycle of a Frog Write one sentence for each picture, describing
the
change
in each
stage.
Use words from the
list to help you
with your
writing. 1 2 3 4 5
legs
adult
egg
tadpole
tail
lungs
gills
frog
Answers next...

6. Stage 1 Stage 2 The life of a frog begins when the tadpole hatches
from the egg. 1 2 3 4 5
Stage 2

7. Stage 2 Stage 3 A tadpole has
gills and swims in the water. Legs begin to develop. 1 2 3 4 5
Stage 3

8. After a period of time the tadpole has fully developed legs and lungs.
Stage 3 1 2 3 4 5
Stage 4

9. The tail is being absorbed and the frog is able to spend more time on land.
Stage 4 1 2 3 4 5
Stage 5

10. Stage 5 The frog is fully developed and can live on land or in water.1 2 3 4 5
End of Activity