Curated OER
The Rock Pool
Third graders use number sense and appropriate problem solving techniques to solve the assigned problems. They write out the solutions to the assigned problems. They work in groups to solve the problem before reporting back to the whole...
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Finding Satisfactory Solutions
Students explore the creative aspects of problem-solving and practice creative problem-solving strategies in the context of a story problem. They decide where to locate ice cream stands in a town so that no one has to travel too far to...
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Circles and Clocks, Shapes and Time
Students work in groups to research clocks and practice telling time. In this telling time lesson, students use the computer program ProQuest to study circles, including radius and diameter, and practice drawing circles using a compass....
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Sorting
Students explore how to logically sort and store information in order to make it easy to manage and easily retrieved. They explore methods they can use to organize and manage information.
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The Fourth Quadrant of Proportiona
Students experiment with scale to solve a problem presented in a video clip. They determine the correct size to use when constructing a model and evaluate the use of proportions in real life applications.
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Property Lists for Quadrilaterals
Students establish classifications of shapes by various properties (angles, sides, etc.). They introduce the important properties of common shapes. Students develop an awareness of the wide variety of ways the 2-D shapes can be alike.
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Triangle Inequality
Students discover that the sum of the lengths of any two sides of a triangle must be greater than the third side. They are shown how a triangle is formed using three strips such as that the triangle is seen inside the strips.
Illustrative Mathematics
Comparing Rational and Irrational Number
Algebra learners must know how to use rational numbers to approximate irrationals. This resource asks participants to decide which number is larger without using a calculator. It makes a great exercise to use as a five-minute transition...
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Getting to the Bottom of the Pyramids
Students work together to develop logical arguments about pyramids and chain letters. They share their ideas with other groups and create a diagram showing the breakdown. They discuss the results.
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The Farmer's Sheep
Students use problem solving skills, logical thinking, and their ability to work sequentially in order to solve an algebra problem. They listen to the problem read aloud by the teacher and devise a plan in order to solve the problem.
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Patterns
Second graders create an ABAB pattern with their name. For this early elementary math lesson, 2nd graders first model their names in an ABAB pattern with unifix cubes. They then recreate the pattern using letter stamps on KidPix.
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Venn Diagram with Blocks
Fifth graders classify blocks according to their attributes. In this math lesson, 5th graders will identify attributes of blocks, sort them, then form the groups into a Venn Diagram, and write ratios using the attributes.
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Missing Square
In this missing square worksheet, students find the missing square amongst a group of numbers with the number that logically belongs there. Students complete 1 problem.
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Bubblegum balls
Students look for patterns to solve problems involving statistics using different colored gumballs. They should be able to look for and find out all the possible outcomes based upon inference and trials.
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Weighing Time
Students devise a strategy to solve problems that is done in a systematic and mathematical fashion. The finding of the unknown value is the focus of the lesson. To solve linear equations proficiently is the skill of the lesson.
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Strawberry Milk
Students work in groups or alone to solve the problem. They use a systematic approach to get all possible answers. They report back to the class with solutions. They may extend their studying using a crate with room for 9 bottles.
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Lollies, Lollies, Lollies
Students listen to the problem read to them. They answer some simple questions using number sentences. They then compose a written record of the solution and share their approaches used.
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The Farmer's Sheep II
Fourth graders listen to the story of a farmer who only likes to be able to see nine sheet from his window. His wife has brought him another sheep - what now? They work together in pairs to solve the problem and share solutions.
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Robots
Fourth graders devise and use problem solving strategies to explore situations mathematically (guess and check, make a drawing, use equipment). The use of logical reasoning is a focus of this lesson.
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Can Stack
Students are able to find the rule for summing consecutive numbers;
identify the pattern of triangular numbers. They then solve the given problem using logic and mathematical reasoning.
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Studies of the Eastern Worlds: Population Graphing
Seventh graders participate in several learning/research stations in which they view artwork from various countries of the Eastern world and collect information on the populations of the Eastern countries. They then use this information...
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Brian's Pegboard I
Third graders focus on developing a systematic approach to problem solving while working on a problem that requires them to determine possible outcomes. They use a pegboard as a manipulative in this problem.
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Brian's Pegboard II
Students are able to assess a problem and use systematic methods to solve the problem. They also find out all the possible outcomes for a sequence of events using tree diagrams.