What it Means to Be Teaching Out of Field (OOF) and What to Do About It
Mrs. Harris Teaches
JUNE 18, 2019
The push was to use free open source digital textbooks like CK-12, WikiBooks, and OER Commons. Earth Science: Geology, the Environment, and the Universe, Teacher Edition. Geology for Dummies. and Periodic Videos (Chemistry). These free resources are good, but you need some books you can pull off your shelf.
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