Trinette Carruthers help students use the plus sign to write an addition expression. Trinette Carruthers and her daughter help students use the plus sign to write an addition expression.
In algebra, letters are used to stand for values that can change (variables) or for values that aren’t known (unknowns). A term is a number or letter on its own, or numbers and letters multiplied ...
In algebra, letters are used to stand for values that can change (variables) or for values that are not known (unknowns). A term is a number or letter on its own, or numbers and letters multiplied ...
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