Unit 2: Buttons, Sorting & Counting
Expectations & Key Concepts for Students
- Represent and identify quantities (e.g., greater than 100) using groups of counters, drawings, symbols, number sentences, and words.
- Use and apply place value concepts to make connections among representations of numbers.
- Use efficient grouping strategies to count a collection of objects.
- Use a benchmark to estimate a quantity of objects in a collection.
- Use words and symbols (e.g., < , >, =) to show comparisons of quantities.
- Represent addition and subtraction problems using counters, number lines, ten frames, drawings, and number sentences.
- Solve word problems (e.g., join, separate/take away, part-whole, compare) involving two whole numbers whose sum is within 100.
- Sort and classify objects by their characteristics. Collect and organize data in a data table and bar graph.
- Use a table or bar graph to solve problems about a data set.
- 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).
- 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).
- Determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in Group C.