In this lesson, students solve "add to with change unknown" math stories as a context for counting on by drawing, writing equations, and making statements of the solution.
In this lesson, students solve "add to with change unknown" math stories using 5-group cards.
In this lesson, students tell "put together with result unknown", "add to with result unknown", and "add to with change unknown" stories from equations.
In this lesson, students solve "take from with result unknown" math stories with math drawings, true number sentences and statements, using horizontal marks to cross off what is taken away.
In this lesson, students solve "take apart with addend unknown" math stories with math drawings, equations, and statements, circling the known part to find the unknown.
In this lesson, students relate subtractions from ten to corresponding decompositions.
In this lesson, students share and critique peer solution strategies for put together with total unknown word problems.
In this lesson, students solve word problems with subtraction of 9 from 10.
In this lesson, students solve word problems with subtraction of 9 from 10.
In this lesson, students model subtraction of 9 from teen numbers.
In this lesson, students model subtraction of 9 from teen numbers.
In this lesson, students model subtraction of 8 from teen numbers.
In this lesson, students model subtraction of 8 from teen numbers.
In this lesson, students solve addition and subtraction problems decomposing and composing teen numbers as 1 ten and some ones.
In this lesson, students solve addition problems using ten as a unit, and write two-step solutions.
In this lesson, students solve subtraction problems using ten as a unit, and write two-step solutions.
In this lesson, students answer "compare with difference unknown" problems about lengths of two different objects measured in centimeters.
In this lesson, students collect, sort, and organize data, then they ask and answer questions about the number of data points.
In this lesson, students use tape diagrams as representations to solve "put together/take apart with total unknown" and "add to with result unknown" word problems.
In this lesson, students recognize and make use of part–whole relationships within tape diagrams when solving a variety of problem types.