Students focus on developing number sense for larger numbers up to 200. They practice estimation and grouping and counting strategies to find the actual quantities of a collection of buttons. Students use counters, number lines, and number charts to represent two- and three-digit numbers.

EXPECTATIONS
	Use this list of expectations to assess students on the key concepts and skills in this unit.
E1*	Represent and identify quantities (e.g., greater than 100) using groups of counters, drawings, symbols, number sentences, and words.
E2*	Use and apply place value concepts to make connections among representations of numbers.
E3*	Use efficient grouping strategies to count a collection of objects.
E4	Use a benchmark to estimate a quantity of objects in a collection.
E5	Use words and symbols (e.g., < , >, =) to show comparisons of quantities.
E6	Represent addition and subtraction problems using counters, number lines, ten frames, drawings, and number sentences.
E7	Solve word problems (e.g., join, separate/take away, part-whole, compare) involving two whole numbers whose sum is within 100.
E8	Sort and classify objects by their characteristics.
E9	Collect and organize data in a data table and bar graph.
E10	Use a table or bar graph to solve problems about a data set.
E11*	Demonstrate fluency with the addition facts with sums to ten in Group C (1 + 9, 2 + 7, 2 + 8, 3 + 6, 3 + 7, 4 + 6, 5 + 5).
E12*	Use math fact strategies to add (direct modeling, counting strategies, reasoning from known facts) for the facts with sums more than ten in Group C (2 + 9, 3 + 8, 4 + 7, 5 + 6).
E13*	Determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in Group C.
	* Denotes Benchmark Expectation