Opening the book…
This page titled 4: Direct Instruction was last modified on Sun, 28 Feb 2021 01:00:39 GMT and is shared under a CC BY-NC-SA license and was authored, remixed, and/or curated by Paula Lombardi.
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From LibreTexts, under CC BY-NC-SA, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.
Opening the book…
This page titled 4: Direct Instruction was last modified on Sun, 28 Feb 2021 01:00:39 GMT and is shared under a CC BY-NC-SA license and was authored, remixed, and/or curated by Paula Lombardi.
The book could not be loaded just now.