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2.8

Geometry and measurement. The student applies mathematical process standards to analyze attributes of two-dimensional shapes and three-dimensional solids to develop generalizations about their properties. The student is expected to:

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(A)  create two-dimensional shapes based on given attributes, including number of sides and vertices;

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(B)  classify and sort three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangular prisms, based on attributes using formal geometric language;

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(C)  classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices;

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(D)  compose two-dimensional shapes and three-dimensional solids with given properties or attributes; and

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(E)  decompose two-dimensional shapes such as cutting out a square from a rectangle, dividing a shape in half, or partitioning a rectangle into identical triangles and identify the resulting geometric parts.

2.9

Geometry and measurement. The student applies mathematical process standards to select and use units to describe length, area, and time. The student is expected to:

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(A)  find the length of objects using concrete models for standard units of length;

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(B)  describe the inverse relationship between the size of the unit and the number of units needed to equal the length of an object;

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(C)  represent whole numbers as distances from any given location on a number line;

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(D)  determine the length of an object to the nearest marked unit using rulers, yardsticks, meter sticks, or measuring tapes;

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(E)  determine a solution to a problem involving length, including estimating lengths;

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(F)  use concrete models of square units to find the area of a rectangle by covering it with no gaps or overlaps, counting to find the total number of square units, and describing the measurement using a number and the unit; and

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(G)  read and write time to the nearest one-minute increment using analog and digital clocks and distinguish between a.m. and p.m.

2nd Grade Math Videos

If you'd like an easy reference for each of these math videos (Google Sheets), click the button below.

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2nd Grade Math Drawing 2-Dimensional Shapes
05:00

2nd Grade Math Drawing 2-Dimensional Shapes

Learn to draw two-dimensional shapes based on attributes, such as the number of sides and vertices or the absence or inclusion of parallel lines. Several examples are provided in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Classifying 3D Solids
05:00

2nd Grade Math Classifying 3D Solids

Learn to sort and describe three dimensional shapes based on attributes using formal geometric language. The video looks at cone, cylinders, spheres, cubes, rectangular prisms, and triangular prisms. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Classifying 2D Shapes
04:58

2nd Grade Math Classifying 2D Shapes

Learn to name and classify two-dimensional shapes based on the number of sides they have, from quadrilaterals to dodecagons. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Composing 2D Shapes and 3D Solids
05:00

2nd Grade Math Composing 2D Shapes and 3D Solids

Learn how to combine two-dimensional shapes into a larger shape with a certain number of sides. Also learn how to combine three-dimensional solids into a larger three-dimensional solid with certain attributes. Several examples are provided in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Decomposing 2D Shapes
05:01

2nd Grade Math Decomposing 2D Shapes

Learn how to decompose or break down larger shapes into smaller shapes, both of the same shape and of different shapes, and how these relate to fractions. Eight examples are given in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Measuring with Different Units
05:00

2nd Grade Math Measuring with Different Units

Learn to use different units to measure the same object and discover the inverse relationships between the size of the unit and the number of units needed to measure and object. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Distances on a Number Line
05:01

2nd Grade Math Distances on a Number Line

Learn to identify numbers as distances from any given point on the number line and how those distances can represent numbers. There is one extended example in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Solving Length Problems
05:00

2nd Grade Math Solving Length Problems

Learn how to solve word problems involving length, including estimating to find solutions. Two examples are provided in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Understanding Area
05:00

2nd Grade Math Understanding Area

Learn the foundations of area by using a grid to imagine and count the number of square units in a rectangle or square. Three examples are provided in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
2nd Grade Math Telling Time to the Minute
04:59

2nd Grade Math Telling Time to the Minute

Learn how to read and write time to the nearest minute using analog clocks. Three examples are given in the video. Find all my videos and even more math resources at https://www.FiveMinuteMath.net.
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