Curated OER
Exploring Polygons and The Greedy Triangle
Excellent lesson plan! Anne Linehane's geometry story, The Greedy Triangle, offers an opportunity to practice forming various types of polygons with your learners. Using elastic bands (or Chinese jump ropes),...
Curated OER
Types of Triangles
Students classify triangles by the length of their sides. In this geometry lesson, students use a white board to demonstrate the angles of various triangles. Students construct an equilateral, isosceles, and a scalene triangle.
Curated OER
Isosceles Triangles
Students investigate triangles. In this shapes geometry activity, students define and state the attributes for equilateral, scalene, and isosceles triangles. Students locate the prefix "tri" in a variety of words and make connections...
Illustrative Mathematics
All vs. Only Some
All shapes have certain defining attributes that set them apart from others. In order to understand this, young mathematicians look at examples and non-examples of triangles, rectangles, and squares, working as a whole class to create...
Curated OER
Triangles Introduction
Young scholars explore geometry by drawing various shapes in class. In this triangle characteristics lesson, students identify the attributes that classify a shape as a triangle and practice using their bodies to create triangles in...
Curated OER
Classifying Polygons
Students study polygons. In this math lesson, students play a game in which they learn the classification system for polygons. Students identify the properties of quadrilaterals.
Illustrative Mathematics
Shape Sequence Search
Learning that size and orientation don't affect the classification of shapes is a big step for young mathematicians. Support children with developing this key understanding by looking at the array of shapes included in this resource. For...
Exploratorium
Exploring Pattern Blocks
Pattern blocks are one of the best math manipulatives ever invented. They are used quite extensively in the math activity presented here. Youngsters use the pattern block to fill in shapes that are present on the worksheet embedded in...
Ohio Department of Education
Describing and Creating Plane Figures - Grade One
Young mathematicians draw, create, and describe different shapes using triangles. They discuss attributes of the original and created shapes. Pupils classify the created shapes and draw and write in mathematics journals to communicate...
Curated OER
Shapes in Our World
Help your students explore shapes. They classify shapes and identify them in their everyday world. Plane shapes are explored, and they classify and identify the plane shapes.
Arizona State University
Roundup Shapes
Let's study 2-D shapes! Young mathematicians compare and classify shapes according to attributes. They evaluate shape riddles and predict the shape being described. Here is the website where you can find the...
Curated OER
Describe and Classify 2-D Shapes
In this 2-D shapes worksheet, students match a set of descriptions to shapes given. A reference website for additional resources is given.
Curated OER
Shapes
Students identify attributes of different geometric shapes. In this geometry lesson, students view a PowerPoint presentation on shapes and use attribute blocks to examine the corners and edges of each shape. Students work together to...
Curated OER
Bodacious Buttons
First graders participate in games, graphing, and probability exercises to sort and graph buttons. They sort buttons with Venn diagrams and Bull's Eye graphs.
Curated OER
Shape Makers
Classify and explore shapes by giving learners opportunities to handle, describe and classify 2D and 3D shapes. Primary learners will sort objects such as triangles, squares, oblongs, circles, ovals, pentagons, hexagons, diamonds, boxes,...
Curated OER
Primary Geometry
Students identity simple geometric shapes. In this early geometry lesson plan, the teacher introduces students to triangles, squares, and rectangles, then students identify and classify the shapes as they are found in the classroom. To...
Curated OER
Numbers as Descriptors
Students use numbers as descriptors. In this mathematical inquiry instructional activity, students use numbers to describe, classify, and compare plants. Students are made aware that numbers can be used to describe things in the world...
Curated OER
What's the Texture?
Students sort, classify, and write about how they sort a variety of shells.
Curated OER
Gummy Bear Sorting
Students demonstrate knowledge of sorting and classifying by color as they sort gummy bear candies.
Curated OER
Cars, Trucks, and Things that Go Sorting Fun!
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.
Curated OER
Bodacious Buttons
First graders graph a data set. Given a set of buttons, 1st graders sort them into categories using specific attributes. They graph the number of buttons in their set based on their attributes using a variety of graphs. Students share...
Curated OER
Listen to a Shape
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.
Curated OER
Shaping Up with Nature at Black Bayou Lake
Students visit a local lake refuge and identify shapes they find in nature. They take pictures of the various shapes and use KidPix to draw shapes around the shapes in the pictures. They watch a slideshow of all the shapes found by their...
Curated OER
Shapetown
Students identify basic geometric shapes. In this geometry instructional activity, students read the book Shapetown and identify the various shapes from the story. Students are given a sheet and draw part of a town using only shapes.
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