Interactive
Curated OER

Homonym Quiz

For Students 2nd - 5th
In this homonyms worksheet, students select the correct homonym to complete each of 19 sentences, clicking on an "answer" button for immediate feedback.
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Khan Academy

Khan Academy: Selective Pressures on Cacti Needle Length

For Students 9th - 10th
Read a passage about selective pressures on cacti needle length and answer the follow-up questions.

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