First graders began a new unit of study in math this week focused on addition and subtraction story problems. As students makes sense of problems and share the ways to solve them, this unit will help them deepen their understanding of addition, subtraction, and the relationship between these operations. Currently, first graders are exploring add-to, put together, and take apart problems with a result unknown. They use their bodies, objects, and drawings to act out stories in which an amount is added or taken away. Later in the unit students will work with problem in which they have to figure out how much is being added:
Diego had 7 pencils.
His sister gave him some pencils
Now, Diego has 9 pencils.
How many pencils did Diego's sister add?
Story problems require mathematicians to apply computation strategies, such as counting on, that they will use throughout the year as they add and subtract within 20 and develop computational fluency within 10.
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