Curated OER
Squirt
Fourth graders using the idea of "how many more squirts" fill a container to develop multiplicative thinking. They also investigate the idea of conservation of volume when working with oddly shaped containers. They attempt to use...
Curated OER
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.
Curated OER
The Fathers' Day Card
Learners 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.
Curated OER
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.
Curated OER
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.
Curated OER
Square Pegs in Round Holes
Sixth graders problem solve the square peg in the round whole problem by applying knowledge of the formulas for the areas of the circle and the square. They decide on a problem solving strategy based on logical reasoning.
Curated OER
Squirt Level 3
Young scholars use the instructional activity, "Squirt", to support students' development of multiplicative thinking. Squirt encourages young scholars to anticipate multiplicative measurement relationships, e.g. three measures of A fit...
Curated OER
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.
Curated OER
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.
Curated OER
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.
Curated OER
Basketball Caps
Young scholars 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...
Curated OER
The Clumsy Tiler N (Fractions)
Students explore patterns and geometric sequencing. Students devise and use problem solving strategies to explore situations mathematically. Students solve real life problems. They demonstrate, with cardboard pieces, fraction and...
Curated OER
Time Problems
Students make sensible estimates and check for reasonable results. They also solve problems with positive and negative integers using practical activities or models as needed.
Curated OER
Adding Ten Tiles I
Students practice this problem that needs a certain amount of experimentation (trial and error) to get any answer at all. In the process they practice their basic number facts. However, to get the complete set of answers Students need to...
Curated OER
Capacity Lotto
In this mathematical worksheet, learners convert fifteen metric units of capacity and multiply and divide whole numbers by 10, 100 and 1000.
Curated OER
The Difference Bar 2
Pupils use Internet software, The Difference Bar, to work out the difference between two numbers by breaking numbers into parts. Students use mental strategies to work out the difference between any 2 two-digit numbers. Pupils describe...
Curated OER
Take Away Bar 2
Students use an Internet tool, The Take-Away Bar" to solve subtraction problems. They use mental strategies to subtract a two-digit number from a larger two-digit number. Students write and solve subtraction problems. They describe...
Curated OER
The Amazing Race
Seventh graders engage in a discussion to determine their experience with traveling. Ask them to describe differences in transportation, currency, culture, food, accommodation, etc. Then they discuss the different expenses one has when...
Curated OER
Ohio Census 1990 and 2000
Students begin the instructional activity by examining Census data from the state of Ohio from 1990 and 2000. Using a worksheet, they solve problems using the data and a calculator. They share their responses with the class and discuss...
Curated OER
Handling Data: Comparing Distributions
Students gather information by analyzing graphs, diagrams and pie charts. In this graphs and diagrams lesson, students complete addition and subtraction problems. Students discuss a pie chart. Students use information to crate a stacked...