Curated OER
A thousand seconds
Students use seconds, minutes, and hours. They then discuss the size of a thousand. After that they read time in digital or analogue form.
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My Dogs
Students use the properties of multiplication to solve problems. They recall the basic multiplication facts as well as write and solve problems that involve whole numbers.
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Number in Geometry
Learners use a number line to assist with their additions. They use a calculator to check for factors. Students are taught factors and multiples. They use array model of multiplication to define meaning. Learners develop a wide range of...
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Finding the Probability
Ninth graders investigate the concept of probability. They use a clear objective that is a visual cue for what is required for the lesson. They apply the basic practices of probability to real life like situations.
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Fuel Saving
Learners explore the problem of percentages. Students find a given fraction or percentage of a quantity. Learners devise and use problem solving strategies on problems explored.
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Beetle Wheels
Second graders link the development of skip-counting patterns to bars on a relationship graph. They also plot our skip-counting patterns on a hundred's board, counting by 2's and also by 4's.
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Time For Breakfast
This unit encourages students to assess the validity of a set of statements and then plan and carry out investigations to find out whether the statements are true. Students then carry out statistical investigations of their own.
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More Lollies
Students review the days of the week and see if the students can recite he sequence using different starting days. Students retell the problem using their own words to check that everyone examines.
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Pigs and Ducks
Second graders use multiplication to solve problems. They use the multiplication facts for 2 and 4. Students combine operations to solve the problem and they devise and apply problem solving strategies.
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Coin Exchange
Second graders explore the concept of money and simple arithmetic. They represent a sum of money using various combinations of coins and devise and use problem solving strategies to explore mathematical situations.
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The Fathers' Day Card
Young scholars subtract using decimals and find half of a decimal number. They write and solve problems which involve decimals and which require a choice of one or more of the four arithmetic operations.
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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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Triangle Sums
Fourth graders determine a way to place numbers in the nine circles that are arranged in a triangular pattern so that each side has an equal sum. They use each number once and practice adding single digit numbers.
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Squirt Level 3
Students use the lesson, "Squirt", to support students' development of multiplicative thinking. Squirt encourages students to anticipate multiplicative measurement relationships, e.g. three measures of A fit in B, by partially filling a...
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Marshmallows
Third graders estimate the volume and mass of one marshmallow using appropriate standard units. They design and carry out an investigation to find the average of volume/mass of one marshmallow.
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The Colored Cube Question
Fourth graders examine how to determine the probabilities or likelihood of outcomes. They complete trials to determine probability while using different manipulatives. They determine how games can be made fair or unfair in this unit of...
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Points
Students listen to Gill's story and determine how many number points she has. They then find the number of points their own name has and get into groups where all the name points are the same.
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Reversing Numbers
Second graders solve a math word problem involving the addition of two digit numbers. They discuss the problem as a class, independently explore the problem, and discuss as a class the solution and how they organized their reversed...
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Rabbits
Learners review what they think doubling means and double numbers mentally, for example, 5, 12, 16. They share their solutions and discuss how they doubled. They work together on a problem that is beyond mental working and solve...
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Shopping
Pupils give change for sums of money. They also solve subtraction problems presented in different forms. The problem Students answer takes a look at a situation from three different perspectives.
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Gulls
Students listen to the problem and think about the first question and the number operation that they would use and explain. They work in pairs and record their solutions so that they can be displayed and shared.
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Darts Game
Third graders attempt to determine what the scores of the game in the problem could be. They work with basic multiplication facts to justify the solutions to a dart game and share all of the possible scores.
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Basketball Caps
Students work on a problem, individually or in pairs. They are asked questions that focus on average. They discus that the average number represents an equal redistribution , rather than just being able to state the rule. They write...
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Time Problems
High schoolers make sensible estimates and check for reasonable results. They also solve problems with positive and negative integers using practical activities or models as needed.