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Hauptinhalt

STANDARDS

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US-NE

Math

Nebraska Math

Grade 2: GEOMETRY

Students will solve problems and reason with geometry using multiple representations, make connections within math and across disciplines, and communicate their ideas.

2.G.1

Shapes and Their Attributes: Students will recognize and represent the attributes of two-dimensional shapes and three-dimensional solids.

2.G.1.a

Recognize and describe all faces of three-dimensional shapes as two-dimensional shapes. Identify and count attributes of solid shapes including the edges, faces, and vertices.

2.G.1.b

Recognize and draw two-dimensional shapes having a specific number of sides, angles, and vertices including triangles, quadrilaterals, pentagons, and hexagons.

2.G.1.c

Partition a rectangle into rows and columns of equal-sized squares and count to find the total.

2.G.1.d

Divide circles and rectangles into two, three, or four equal parts and describe the parts using the language of halves, thirds, fourths, half of, a third of, and a fourth of.

2.G.1.e

Recognize that equal shares of identical wholes need not have the same shape.
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2.G.2

Describe Measurable Attributes: Students will measure, estimate, and compare lengths to build meaning of the measurement process.

2.G.2.a

Measure the length of an object using two different length units and describe how the measurements relate to the size of the specific unit.

2.G.2.b

Compare the difference in length of objects using inches and feet or centimeters and meters.
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2.G.3

Measurement: Students will use tools to measure and estimate length using standard units.

2.G.3.a

Identify and use appropriate tools for measuring length.

2.G.3.b

Measure and estimate lengths using whole numbers with inches, feet, centimeters, and meters.

2.G.4

Relate Addition and Subtraction to Measurement: Students will add or subtract to solve length problems.

2.G.4.a

Represent whole numbers as equally spaced lengths on a number line diagram. Use number lines to find sums and differences within 100.

2.G.4.b

Use addition and subtraction within 100 to solve problems using the same standard-length units.

2.G.5

Time and Money: Students will solve problems with dollar bills and coins and tell time to the nearest five-minute interval.

2.G.5.a

Solve problems involving dollar bills, quarters, dimes, nickels, and pennies using $ and ¢ symbols appropriately.

2.G.5.b

Identify and write time to five-minute intervals using analog and digital clocks and both a.m. and p.m.