Students connect the many representations of quantity to place value concepts for two- and three-digit numbers. Students group and count different quantities of objects and partition numbers into hundreds, tens, and ones using number lines, charts, and connecting cubes. Students explore the relationship between a container's size, shape, and volume. Students also practice telling time on analog and digital clocks.

EXPECTATIONS
	Use this list of Expectations to assess students on the key concepts and skills in this unit.
E1*	Represent quantities (to the hundreds) using connecting cubes, words, and symbols.
E2*	Compose and decompose numbers using ones, tens, and hundreds.
E3*	Show different partitions of numbers using connecting cubes, number lines, and number sentences (e.g., 154 = 100 + 50 + 4).
E4	Estimate a quantity using 10 and 100 as benchmarks.
E5	Read and write numbers (to the hundreds).
E6*	Make connections between place value concepts and representations of numbers with counters, number lines, number sentences, and symbols.
E7*	Recognize that different partitions of a number have the same total (e.g., 50 + 4 = 40 + 14).
E8	Solve addition and subtraction word problems (e.g., adding to, putting together, comparing) involving two or three whole numbers using number lines, number sentences, or the 200 Chart.
E9	Read and write time to the nearest hour and half hour using analog and digital clocks.
E10	Measure volume of containers using nonstandard units.
E11	Make a data table and a bar graph to find information about a data set.
E12	Read a data table and a bar graph to find information about a data set.
E13	Make predictions and generalizations about a data set using a data table and a graph.
E14*	Use math fact strategies to add (direct modeling, counting strategies, reasoning from known facts) for the facts in Group F (8 + 6, 9 + 6, 9 + 7, 10 + 4, 10 + 5, 10 + 6, 10 + 7, 10 + 8, 9 + 8, 9 + 9).
E15*	Determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in Group F.
	* Denotes Benchmark Expectation