Curated OER
Looking For Triangles
Students solve problems with triangles. In this geometry instructional activity, students analyze shapes to find different triangles. They name the shapes created by putting triangles together.
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Geometric Patterns and Relationships
Fifth graders explore three-dimensional figures. As a class, they discuss the characteristics of various three-dimensional figures. In groups, 5th graders write riddles describing the geometric shape. Partners read each other's...
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Prism Investigation
In this prism worksheet, students solve a word problem about prisms. Students are given a "guided review" and suggestions for proceeding. Students then complete a function machine.
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Perimeter Word Problems
In this perimeter worksheet, students complete a set of 10 short word problems that define certain measurements and ask for perimeter. A reference web site is given for additional activities.
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Fraction Fun
Students define properties of fractions and solve for them. In this algebra activity, students rewrite fractions from mixed numbers to improper fractions. They reduce fractions using the GCF and convert the denominators correctly when...
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Allotropes
Brilliant graphics depict a variety of allotropes, especially the allotropes of carbon. Some notes are available to help make these useful for teaching your young chemists, but not for every slide. With some additional preparation on...
Cornell University
Bridge Building
Bridge the gaps in your knowledge of bridges. Individuals learn about bridge types by building models. The activity introduces beam bridges, arch bridges, truss bridges, and suspension bridges.
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This unit...
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"The Greedy Triangle" by Marilyn Burns
Students discover which regular polygons can be used to tile a plane.
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Fantastic Fractions
Fourth graders work with fractions using hands on experiences and reasoning skills and use fractions to communicate the idea of a part of a whole.
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Visualize 3-D Objects and Make Nets of Common Solids
In this 3-D objects and common solids worksheet, students cut out and count the number of faces on several different types of boxes and make a cuboid from straws or a card. Students fill out 4 different categories involving 5 different...
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Lesson Plan Two: Polygons
Learners explore the concept of polygons on a two-dimensional plane. They identify polygons in everyday life and draw different polygons according to their classification. Using a geoboard and geobands, they consrtuct polygons and even...
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The Symmetry of Snowflakes
Celebrating the change of season with science and language arts activities.
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Reflections of Symmetry
Students use video and the Internet to identify examples of bilateral and radial symmetry in the world around them. They create symmetrical reflection designs using pattern blocks and paper.
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Quadrilaterals
In this geometry worksheet, 10th graders solve problems with quadrilaterals. They calculate the sum of the angles, find missing angles and identify properties of quadrilaterals. There are 16 questions with an answer key.
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It Matters
Learners use descriptive vocabulary to discuss the attributes of matter. Then, they sort objects or pictures by the type of matter they are comprised of. Finally, students match objects of matter with similar attributes and create a...
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Surface Area of Prism
Tenth graders are provided instructions, including a video, on calculating the surface area of a prism. The one-page interactive worksheet contains two worked questions. Answers are included.
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Let's Tesselate
Students investigate the geometrical concepts of translation, reflection, and rotation. They make different observations looking for the concepts that are displayed in classroom items like floor tiles, carpet designs, and visuals hung in...
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Explore Area
In this exploring area worksheet, students sharpen their problem solving skills as they solve 6 story problems using the provided diagrams.
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Tesselations
Seventh graders produce a tessellation of an original design developed using an equilateral triangle, where three unique symmetrical faces rotate throughout their creation.
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Snow Science
Young scholars investigate how efficient different substances are at melting snow. Students collect and analysis data.
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Cut-Glass Mosaic Garden Stepping Stones
Students design and create a mosaic glass collage. In this mosaic art instructional activity, students complete lessons to learn about mosaic art and design. Students watch their teacher demonstrate the project and then create their own...
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Honeybee
Students investigate honeybees and the importance of honeybees to humans. They identify the various parts of a bee's body using velcro parts, role-play a hive, and answer review questions.
Curated OER
Marvelous Math -- Colorful Fractions
Students begin the lesson by discovering that a fraction is one part of a whole. In groups, they practice reducting larger fractions into small fractions and discovering they are equal. They use blocks to identify the relationship...