A vs AN—Determiners
grammar · L.1.1.H+1
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science → earth and space science → earth and solar system · NGSS MS-ESS1-1 (SEP: ENGAGING IN ARGUMENT FROM EVIDENCE); CCSS.ELA-LITERACY.WHST.6-8.1
life science · NGSS MS-LS1-2
Three ways to use Workybooks — pick what fits.