Contexts for Learning Mathematics: The T-Shirt Factory: Place Value, Addition, and Subtraction (Gr. K-3)
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- Students revisit the Masloppy family in The T-Shirt Factory as Grandma Masloppy launches a lucrative T-shirt business. This context and follow-up simulations highlight place value, regrouping, equivalence, and systematic exchange. As the unit progresses, standard addition and subtraction algorithms are explored, and the concept of place value is developed to four places.