Lesson Plan
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American Chemical Society

Isolation of Phytochrome

For Teachers 9th - 12th Standards
Why do soybean plants that are planted weeks apart in the spring mature simultaneously in the fall? Four independent activities cover the history of phytochrome research, scientist collaboration, the electromagnetic spectrum, and...
Worksheet
Curated OER

Pronoun Reference - Exercise 1

For Students 6th - 8th
Do your class members need extra practice with pronouns? Learners are directed to read the sample sentences, determine whether the sentences contain pronoun reference errors, and if so, correct the problems they find. A link to an...
Worksheet
Curated OER

Pronoun Reference exercise 1

For Students 4th - 6th
In this pronoun usage worksheet, students read sentences to determine whether the they contain pronoun reference errors and fix any mistakes they find. Students read twenty sentences.