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About Us
Meet the Robertson Team
Contact
Publications
Inquiry
Math
Math Lessons
Early Years
Primary
Junior/Intermediate
Exploring Math through Inquiry
Family Math Nights
Book Reviews
Science
Science Inquiry
Early Years
Primary
Junior/Intermediate
Outdoor Education
Blog
eNewsletter
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Primary Math
Number Sense
Geometry and Spatial Sense
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Measurement
Patterning and Algebra
All Lessons
The Animal Grid Game
The Animal Grid Game
Students love this offline coding lesson in which they get to be the zookeeper feeding animals
Draw a Structure from 3 Different Views
Draw a Structure from 3 Different Views
Students learn how to draw 2D/3D images while using accurate positional and directional language
Build a Structure from 3 Different Views
Build a Structure from 3 Different Views
Students learn how to compare and sort 2D/3D images while using positional and directional language
Can You Draw This?
Can You Draw This?
Students combine art with math in this activity to express their knowledge of spatial language and geometric shapes
Spatializing Area (Part 3 of 3)
Spatializing Area (Part 3 of 3)
Students use cutout shapes to understand the relationship between size, area and relevant measurements
Spatializing Area (Part 2 of 3)
Spatializing Area (Part 2 of 3)
Students use cutout shapes to understand the relationship between size, area and relevant measurements
Spatializing Area (Part 1 of 3)
Spatializing Area (Part 1 of 3)
Students use cutout shapes to understand the relationship between size, area and relevant measurements
Box or Not?
Box or Not?
Sort and classify 2D and 3D figures by their geometric properties and verbalize their thinking using spatial language
Dice Toss
Dice Toss
Students engage inÂ a simple probability experimentÂ that only requires dice and mental math strategies
Hexagon Card Game
Hexagon Card Game
Students race to completely fill in the outline of a hexagon using different combinations of pattern blocks
I Have A… Who Has A…?
I Have A… Who Has A…?
Students develop an ability to quickly identify and communicate the names of many different geometric shapes
How Many Dots Do You See?
How Many Dots Do You See?
Students use visual pattern/arrangement to develop how to recognize quantity with accuracy and speed
How Many? 5-Frame and 10-Frame Inside-Out
How Many? 5-Frame and 10-Frame Inside-Out
Students develop their spatial structuring of numbers and strengthen their working memory to compose and decompose
Secret Shape Code
Secret Shape Code
Students develop spatial skills by practicing how to describe the location and orientation of different cut-out shapes
Square Moves
Square Moves
Students take a hands-on approach to learning transformation by using square tiles to recreate transformed shapes
See It, Build It, Check It (3-D Version)
See It, Build It, Check It (3-D Version)
Students exercise their ability to recreate 3D geometric shapes from memory using pattern blocks
Can You Make A Square?
Can You Make A Square?
Students utilize their spatial reasoning skills to create squares using different tangram combinations
Missing Puzzle Pieces
Missing Puzzle Pieces
Students develop reasoning and discussion skills by identifying the missing piece of a puzzle from options below
See It, Build It, Check It (2-D Version)
See It, Build It, Check It (2-D Version)
Students exercise their ability to recreate 2D geometric shapes from memory using pattern blocks
Shape Transformer
Shape Transformer
Students work together to understand transformations as a series of inputs and outputs using the "Shape Transformer"
Hole-Punch Symmetry
Hole-Punch Symmetry
Students visualize how paper that has been folded and hole-punched will look when the paper is unfolded.
Square Tile Grid Symmetry Quick Image
Square Tile Grid Symmetry Quick Image
Students have to visualize a series of reflection challenges made of square tiles and recreate them from memory.
Pattern Block Symmetry Quick Image
Pattern Block Symmetry Quick Image
Students have to visualize a series of reflection challenges made of pattern blocks and recreate them from memory.
Pattern Blocks Quick Image
Pattern Blocks Quick Image
Students have to visualize a series of challenges made of pattern blocks and recreate them from memory.
Target Number Game
Target Number Game
Students select target numbers and attempt to scoop up that many countable objects.
Designs and Patterns on Grid
Designs and Patterns on Grid
Students learn how to read letter-number coordinates by creating designs and patterns on grid.
Pentomino Battleship
Pentomino Battleship
Students practice reading letter-number coordinates by playing a battleship game with a partner.
Perspective Taking
Perspective Taking
Students learn perspective taking by identifying the top, side, and front view of 3-D figures.
Daily Calendar
Daily Calendar
This daily lesson with many small activities gives students the opportunity to practice all five strands of math every day.
Doubles
Doubles
Students organize doubles from 0 to 12 in a way that makes sense to them. This allows them to see number patterns.
Origami Math
Origami Math
Students make connections between mathematics, history and visual arts, through origami.
Dominoes Parking Lot Game
Dominoes Parking Lot Game
Students are given the challenge of placing dominoes in their corresponding parking spot.
Barrier Game
Barrier Game
One student builds a structure and gives instructions to his/her partner to build an identical structure.
Building with the Mind’s Eye
Building with the Mind’s Eye
Students visualize and build a figure in their mind's eye. Then they describe it for the class.
Number Hunt
Number Hunt
Students practice one-to-one correspondence in this fun dice-rolling, bingo-dabbing game!
Collect the Shapes
Collect the Shapes
Children collect 2D shapes on a grid by giving directional instructions and answering questions on shapes attributes.
Multiple Turnover Game
Multiple Turnover Game
In this game students try to identify whether their cards contain multiples of a given factor.
Curious George and the Rabbits
Curious George and the Rabbits
Students work together to demonstrate different ways to compose and decompose the number 10 or 20.
Adding Up the Number Line
Adding Up the Number Line
In this addition and subtraction game players attempt to arrive exactly at 500 on the number line.
The Cube Challenge
The Cube Challenge
In this lesson, students work together to build 21 unique structures out of 3, 4, and 5 unifix cubes. Can you build them all?
Upside Down World
Upside Down World
Students work with unifix cubes to rebuild "buildings" that have been turned upside down!
Find Your Match
Find Your Match
Students collect a matching number pair or two cards that add or subtract to a predetermined sum/difference.
Scrambled Egg Math
Scrambled Egg Math
Children shake the egg carton then roll a die to determine whether they will be adding or subtracting.