In this geometry lesson, learners read The Greedy Triangle and use geoboards to construct geometric shapes. They identify the number of sides and angles each shape has.

Young scholars sort, classify and write about what characteristics they used to sort fish counters.

First graders sort toys by various attributes. They, in groups, sort toy vehicles by color, size etc. and then explain how they chose to group the toys. They write, draw or dictate an explanation of their sorting methods.

Students demonstrate knowledge of sorting and classifying by color as they sort gummy bear candies.

Elementary learners explore coin mint dates. First, they listen to the book Alexander Who Used to be Rich Last Sunday by Judith Viorst. They then sort a collection of coins according to their mint date and put them in order from oldest...

Students add to a class Shape City by designing and constructing new buildings.

Students listen to the book, Harriet's Halloween Candy, and discuss the many ways Harriet sorted the candy from her trick-or-treat bag. They sort and classify individually wrapped candy.

Second graders culminate their study of shapes by describing the shapes using the proper mathematical descriptors.

Primary geometers create a picture using tangrams. In this geometry activity, students read Grandfather Tang: A Tale Told with Tangrams, cut out their own tangrams, and choose a character from the story to make using their tangram pieces.

First graders identify basic shapes (circle, square, rectangle, triangle) and describes the attributes of each. They use magazines to find examples of each shape, and then make a collage.

Students sort, classify, and write about how they sort a variety of shells.

First graders sort and classify, and complete a T-chart using Students' shoes.

Students examine a Webmath page, and demonstrate how to copy and paste. They create a computer-generated template page presenting the attributes of two- and three- dimensional shapes.

Second graders, in groups, estimate amounts in various jars. They sort each jar from least to greatest amount.

Students examine and identify polyhedron shapes on a math website. They write journal reflections about two- and three-dimensional shapes, and transform a square into a pinwheel.

Students compare and contrast related two- and three-dimensional shapes, and complete a Venn diagram illustrating the attributes of each. Using a poem pattern from another lesson, students use data from the diagram to write an attribute...

Students learn five songs to define and develop understanding of the attributes of two- and three-dimensional figures and the meaning of mathematical terms. They classify objects as either two- or three-dimensional, through the use of...

First graders sort, classify, and write about how they sort buttons.

Students sort gingerbread men, then identify the sorting rule that they used.

Students explore geometric vocabulary through creation of shapes on a geoboard. They present design attributes, transfer of design, and color-coding components mix to create a fun and exciting lesson that stretches student thinking.

Fifth graders work with polygons.

Second graders categorize fish crackers into groups by color and compare the two groups using the symbols <, =, and >. They use concrete objects to solve number sentences with equalities and inequalities.

First graders study the attributes of circles, squares, triangles and rectangles. They sort shapes that are the same and those that are different into groups.

Students, in groups, use song lyrics and math to descrie two and three dimensional shapes.