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CK-12 Foundation
Ck 12: Life Science: 2.7 Organelles
Discover the organelles of a cell, and how their structure contributes to the cell's function.
Other
Science4 Us: Materials
Students use a dichotomous key to sort materials into natural and man-made and sort further using the adjectives rough and smooth; this activity builds both science and language skills as students classify materials and build deeper...
CK-12 Foundation
Ck 12: Physical Science: Reflection of Light
[Free Registration/Login may be required to access all resource tools.] Considers the reflection of light from both smooth and rough surfaces and the law of reflection.