Curated OER
No-Three-In-A-Line Again
Students interpret information and results in context while using words and symbols to generalize patterns. They use symmetry and angle properties of polygons to solve practical problems and identifying invariant properties under...
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Launching Rockets
Second graders discuss experiences of watching a rocket launch either on television or in person before making paper rockets. They make and color rockets which they attempt to launch using a strong breath blown through a straw at the...
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Science: Backyard Bugs Data Collection
Young scholars practice data collection skills by observing common bugs found in their local environment. Once the data is collected they complete data sheets to compare, contrast, sort, and classify the insects. The lesson includes...
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Calculator Numbers
Third graders practice working out a hidden number on a calculator via number sequence in the advanced additive stage six. They assess number sequence to unveil a mystery number that has been entered onto a calculator and then switch...
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Measurement
Second graders practice measuring and estimating the length of two objects. They answer questions related to these topics and then work together in parts to complete a worksheet.
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The Adventure of Echo the Bat
Pupils compare different habitats based on satellite imagery. They identify land features in the satellite imagery.
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Shaking Hands
Students use diagrams or lists to show relationships. They also identify the pattern of triangular numbers. The mathematics behind situations provide a way of problem solving to examine the answers.
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4c and 7c Stamps
Fifth graders determine what it takes for a sequence of numbers to carry on infinitely. They examine patterns that can be made using linear combinations of 4 and 7 based on the use of four cent and seven cent stamps. They use appropriate...
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Your Just Desserts
Pupils write letters to town officials and local businesses asking for favorite dessert recipes. They tabulate their responses in a spreadsheet. Students turn their survey results into colorful graphs.
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Min-Max temperatures
Pupils investigate data of minimum and maximum weather temperatures over the period of one week. They answer guided questions in order to establish comprehension of interpreting the data.
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Fractions
First graders are asked to put their fingers on their triangles that looks like the one that is on the overhead. They are asked to tell how they would write a fraction for this one part. Students go through step one until all of the...
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Using Tens Frames for One to One Counting
Students complete a variety of exploratory exercises regarding counting through 10. They recognize the numbers 0-10 as represented using the quinary pattern on the tens frames. They are able to visualize the patterns for future...
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Using Tens Frames for the Strategy of Bridging to Ten
Second graders are given a problem. They are shown a fixed frame of 9 and students are asked to say where the six more should go without touching the tens frame. Students are invited to answer the question and show go they got the answer.
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Big Steps
Second graders practice developing strategies for mental calculation when counting in 10s and 100s. They mentally perform calculations involving addition and subtraction to be able to state the difference between numbers by counting in...
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High School Mathematics Problems from Alaska: Azimuth and Arc Length
Students track the Azimuth sunrise and sunset over time by creating a chart.
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Fold and Cut 2
Second graders make, name, and describe, using their own language and the language of geometry, everyday shapes and objects. They create and discuss geometric patterns which repeat (show translation), or which have rotational or...
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Robots
Second graders examine the concepts of direction and movement as they attempt to program a robot to move. They design a set of instructions using right, left, forward, backwards, and quarter turn so that the robot can accomplish tasks.
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Odd One Out
Ninth graders identify and describe in their own language, the following 2-dimensional shapes: square, circle, box, pentagon; classify objects by shape attributes. They then list a number of properties that distinguish squares from...
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Who Plays What?
Ninth graders divide in pairs 3 cards with the words possible, impossible and certain on them. Ask questions of the class and get the students to hold up the word that describes the event (for example) Tomorrow it will snow. You have...
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The Folding Problem
Ninth graders experiment with paper folding to create geometrical shapes. Students analyze the Copymaster of the problem. After the students have worked on their own for a while, stop them and discuss.
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More Lollies
Pupils review the days of the week and see if the students can recite he sequence using different starting days. Pupils retell the problem using their own words to check that everyone examines.
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Fifty Toes
Students guess the subject of the given problem by reasoning. Then they discuss the ways that the problem could be solved by keeping track of their counting in 10s and showing their work.
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A Square of Circles
Second graders practice calculations and working with even and odd numbers. They perform mental calculations involving addition. Students devise and use problem solving strategies to solve problems.
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Cannon Balls
Second graders investigate 2 and 3 dimensional objects. They discuss the characteristics of the triangle. Students create sequential patterns and describe the rule for their pattern.