Math / 1st Grade / Unit 8: Shapes and Time

Shapes and Time

This unit will include approximately 15 lessons. Units 4 through 8 will be released on a rolling basis starting in Fall 2025.

Math

Unit 8

1st Grade

Unit Summary

Unit Prep

Unit Practice

Fluency Activities

Access a full library of standards-aligned activities to engage students in practicing and strengthening their procedural skills and fluency.

Lesson Map

Lesson

Sort two-dimensional shapes by any attributes.

Standards

1.G.A.1

Lesson

Identify, build, and draw circles and triangles using defining attributes.

Standards

1.G.A.1

Lesson

Identify, build, and draw rectangles and squares using defining attributes.

Standards

1.G.A.1

Lesson

Common Core Standards

Key

Major Cluster

Supporting Cluster

Additional Cluster

Core Standards

The content standards covered in this unit

Geometry

1.G.A.1 — Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

Geometry

1.G.A.1 — Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.
1.G.A.2 — Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape. Students do not need to learn formal names such as "right rectangular prism."

Geometry

1.G.A.2 — Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape. Students do not need to learn formal names such as "right rectangular prism."
1.G.A.3 — Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

Geometry

1.G.A.3 — Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

Measurement and Data

1.MD.B.3 — Tell and write time in hours and half-hours using analog and digital clocks.

Measurement and Data

1.MD.B.3 — Tell and write time in hours and half-hours using analog and digital clocks.

Foundational Standards

Standards covered in previous units or grades that are important background for the current unit

Geometry

K.G.A.1

Geometry

K.G.A.1 — Describe objects in the environment using names of shapes, and describe the relative positions of these objects using terms such as above, below, beside, in front of, behind, and next to.
K.G.A.2

Geometry

K.G.A.2 — Correctly name shapes regardless of their orientations or overall size.
K.G.A.3

Geometry

K.G.A.3 — Identify shapes as two-dimensional (lying in a plane, "flat") or three-dimensional ("solid").
K.G.B.4

Geometry

K.G.B.4 — Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (e.g., number of sides and vertices/"corners") and other attributes (e.g., having sides of equal length).
K.G.B.5

Geometry

K.G.B.5 — Model shapes in the world by building shapes from components (e.g., sticks and clay balls) and drawing shapes.
K.G.B.6

Geometry

K.G.B.6 — Compose simple shapes to form larger shapes. For example, "Can you join these two triangles with full sides touching to make a rectangle?"

Future Standards

Standards in future grades or units that connect to the content in this unit

Geometry

2.G.A.1

Geometry

2.G.A.1 — Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes. Sizes are compared directly or visually, not compared by measuring.
2.G.A.3

Geometry

2.G.A.3 — Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
4.G.A.3

Geometry

4.G.A.3 — Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.

Measurement and Data

2.MD.C.7

Measurement and Data

2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Standards for Mathematical Practice

CCSS.MATH.PRACTICE.MP1 — Make sense of problems and persevere in solving them.
CCSS.MATH.PRACTICE.MP2 — Reason abstractly and quantitatively.
CCSS.MATH.PRACTICE.MP3 — Construct viable arguments and critique the reasoning of others.
CCSS.MATH.PRACTICE.MP4 — Model with mathematics.
CCSS.MATH.PRACTICE.MP5 — Use appropriate tools strategically.
CCSS.MATH.PRACTICE.MP6 — Attend to precision.
CCSS.MATH.PRACTICE.MP7 — Look for and make use of structure.
CCSS.MATH.PRACTICE.MP8 — Look for and express regularity in repeated reasoning.

We Handle Materials So You Can Focus on Students

We've got you covered with rigorous, relevant, and adaptable math lesson plans for free