CK-12 Foundation
Seasonal Changes in Plants: Leaf Pigment
Leaves fall off the tree in the autumn, but why do they change colors? The interactive covers the role of chlorophyll and photosynthesis. It also explains both carotenoids and anthocyanins.
Curated OER
English Exercises: Reading Exercises - Snakebite Initiative
For this reading comprehension interactive worksheet, students read a news article entitled, "The Global Snakebite Initiative Is Working to Improve Treatment for Victims." They answer 5 multiple choice questions based on the reading....
Curated OER
Passive Voice Activity
In this interactive sentence rephrasing worksheet, students rewrite each of the 29 sentences in a passive voice. This worksheet is interactive.