Geometry

Identify and describe shapes (squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres).

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Resource | Resource Type Grade Level | Rating |
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This interactive Flash lesson helps students to visualize the faces and edges that make up cubes and to distinguish cubes from other shapes. A pdf teacher guide is available at MathActive Lessons for Grades 3-4 (cataloged separately), which also includes links to unvoiced, Navajo, and Spanish versions of the lesson (see #1, 3, 4). | Activity, Interactive Media Grade Level: K, 1, 2, 3, 4 | |

This interactive Java applet helps students learn about sequences and patterns through analysis of attributes. The user analyzes the existing pattern and must complete the "train" by dragging the appropriate shapes into place. The user is required to discern which attribute is used to create the pattern (color, shape, or number) as well as determine how to extend it. | Activity, Interactive Media Grade Level: 2, 3, 4 | |

This interactive Flash lesson helps students to distinguish circles from other shapes in a real world environment. The animated pages give printed and voiced instructions. A pdf teacher guide is available at MathActive Lessons for Grades K-2 (cataloged separately), which also includes links to unvoiced, Navajo, and Spanish versions of the lesson (see #1, 3, 4). | Activity, Interactive Media Grade Level: K, 1 | |

This interactive Flash lesson helps students to distinguish triangles from other shapes in a real world environment. The animated pages give printed instructions in English. A teacher guide is available [see #7 at MathActive Lessons for Grades K-2 (cataloged separately)]. | Activity, Interactive Media Grade Level: K, 1 | |

This problem helps children begin to understand the various properties of common geometric solid shapes. It also promotes naming, discussion and experimentation concerning their features, and requires them to justify their ideas. It asks students to judge the stability of nine configurations made from six common solids. The Teachers' Notes page includes suggestions for implementation, discussion questions, ideas for extension and support, and printable sheets. | Activity Grade Level: K, 1, 2 | |

This activity gives students practice naming and using shape and color attributes to create patterned sequences. The first challenge asks students to use attribute differences to extend a sequence. A second, more open-ended challenge asks students to maximize the length of their sequences under a further constraint. An interactive applet is provided as an alternative to physical manipulatives. The Teachers' Notes page includes suggestions for implementation and discussion questions. | Activity, Interactive Media Grade Level: K, 1, 2, 3 | |

This familiar game can be played by one or two players taking turns. Players choose to match equivalent representations of numbers, shapes, fractions, or multiplication facts. The game can be played in clear pane mode, or for added challenge, with the windows closed. | Game Grade Level: K, 1, 2, 3, 4, 5 | |

This activity asks students to recognize differences in shapes and sort them. They are given a set of 15 shape cards that they can sort by the criteria of color, size and shape. Ideas for implementation, extension and support are included along with a printable sheet of the cards. | Activity Grade Level: K, 1, 2 | |

This narrative document describes the progression of Geometry across the K-6 grade band. It is informed both by research on children's cognitive development and by the logical structure of mathematics. The document discusses the most important goals for elementary geometry in three categories, namely, geometric shapes and their categories, composing and decomposing geometric shapes, and spatial relations and spatial structuring. | Reference Materials, Article Grade Level: K, 1, 2, 3, 4, 5, 6+ Resource is part of a PD collection | |

This assortment of mathematical activities (pdf) can be played as a family while traveling and can help improve a child's number sense, cultivate curiosity, and promote problem solving. This resource take advantage of the real world of travel to explore math concepts including: measuring distance and time, recognizing shape and color and working with numbers. This is an excerpt from "Family Math II: Achieving Success in Mathematics." | Activity Grade Level: K, 1, 2, 3, 4, 5 |