Page 18 - Key to Social Studies 4
P. 18
Assessment
Self-assessment is a powerful tool to help you evaluate your learning
development. Use the K-W-L chart below to keep track of your progress.
K What I W What I Want L What I
Know
Learned
to Know
Tidbit
According to research done on the oldest
rocks and meteorites that have been found
so far, Earth is about 4.54 billion years old.
The planet Earth
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