Spatial

Topics

In order. Each topic shows its concepts first, then the lesson, a test and its games. Your place is saved if you leave.

1. 1Topic 1: Area & PerimeterSame area, different fence — reshape it and seeNext for you

   Concepts · 22 idea cards

   1. 1Area counts the squares inside
   2. 2Perimeter is the distance around
   3. 3Fence or floor: which measure?
   4. 4Length × width gives the area
   5. 5Two lengths and two widths
   6. 6Square units for area, plain units for perimeter
   7. 7Split a shape into rectangles
   8. 8Find the missing sides first
   9. 9Work back from the area
   10. 10A parallelogram becomes a rectangle
   11. 11The height goes straight up
   12. 12Two triangles make a parallelogram
   13. 13A triangle's height can land outside it
   14. 14Any side can be the base
   15. 15Same base, same height, same area
   16. 16Same area, different perimeters
   17. 17Close to a square needs the least fence
   18. 18Same perimeter, different areas
   19. 19Move a tile, change the perimeter
   20. 20Carpet and baseboard for a room
   21. 21A fence on three sides
   22. 22A wall with a triangle on top

   Start the lesson →Test yourselfAbout this topicPlaySame Area, Different Fence
2. 2Topic 2: Triangles & AnglesMove a corner — every angle changes, one number never does

   Concepts · 24 idea cards

   1. 1An angle is a turn
   2. 2Lay one angle on another
   3. 3Count wedges to measure an angle
   4. 4A degree is a tiny turn
   5. 5Benchmark angles for estimating
   6. 6Acute, right, obtuse or straight
   7. 7Put the protractor on the vertex
   8. 8Two scales: start at the 0
   9. 9Draw an angle with a protractor
   10. 10Every triangle has three angles
   11. 11Name a triangle by its sides
   12. 12Equal sides face equal angles
   13. 13Name a triangle by its angles
   14. 14One triangle, two names
   15. 15A triangle's angles make 180°
   16. 16Find the missing angle
   17. 17Inside and outside angles
   18. 18Outside angles make a full turn
   19. 19Build a triangle from three sides
   20. 20Two sides must beat the third
   21. 21Build from a base and two angles
   22. 22Congruent means an exact copy
   23. 23Same angles can differ in size
   24. 24Congruent rectangles and parallelograms

   Start the lesson →Test yourselfAbout this topicAngles & ProtractorsPlayTriangle Forge
3. 3Topic 3: Where Exactly?Two numbers name any spot — and the order is part of the address

   Concepts · 13 idea cards

   1. 1Across, then up
   2. 2Plot a point
   3. 3A zero puts it on an axis
   4. 4Read the scale first
   5. 5Two scales, and halfway
   6. 6Lines without labels
   7. 7Points between the lines
   8. 8Coordinates on a map
   9. 9Slide a point
   10. 10Describe the slide
   11. 11Subtract to find the slide
   12. 12Undo a slide
   13. 13Two slides make one

   Start the lesson →Test yourselfAbout this topicPlayMove Maker
4. 4Topic 4: Slide, Flip, TurnMove a shape without changing it — then say exactly how you moved it

   Concepts · 15 idea cards

   1. 1Slide every corner
   2. 2Write a slide with arrows
   3. 3Which slide was it?
   4. 4Flip across the line
   5. 5Flip across a flat line
   6. 6Fold to check a flip
   7. 7Flip on the coordinate grid
   8. 8Flip, then flip again
   9. 9Turn about a point
   10. 10Turn it, corner by corner
   11. 11Turn about a corner
   12. 12Turn about a point outside
   13. 13Undo a move
   14. 14Two moves in a row
   15. 15Slide, flip or turn?

   Start the lesson →PlayMirror Maze
5. 5Topic 5: How Big Is It, Really?One ribbon, four units — the ribbon never moves, the number does

   Concepts · 22 idea cards

   1. 1Length, mass, capacity or area?
   2. 2Pick a unit that fits the size
   3. 3Rough or exact: the job picks the unit
   4. 4Benchmarks for length
   5. 5Benchmarks for mass and capacity
   6. 6Could that really be its size?
   7. 7Estimate first, then measure
   8. 8Count the spaces from the start
   9. 910 millimetres make 1 centimetre
   10. 10Area is measured in squares
   11. 11Smaller unit, more of them
   12. 12Metres, centimetres and millimetres
   13. 13A kilometre is 1000 metres
   14. 14Kilo, centi, milli: one pattern for every unit
   15. 15Grams and kilograms
   16. 16Millilitres and litres
   17. 17Big unit to small unit: multiply
   18. 18Decimals in measurements
   19. 19Move the digits to change the unit
   20. 20Small unit to big unit: divide
   21. 21Compare in the same unit
   22. 22Solve a measuring problem

   Start the lesson →Test yourselfAbout this topicPlayMeasure Up
6. 6Topic 6: From Every SideOne object, three drawings — and none of them look alike

   Concepts · 22 idea cards

   1. 1A view shows one side, drawn flat
   2. 2The front view: the tallest in each column
   3. 3The side view: standing at the right
   4. 4The top view: looking straight down
   5. 5Where you stand sets the view
   6. 6The back view is the front view flipped
   7. 7A view cannot show how deep
   8. 8Hidden cubes still count
   9. 9Numbers on the top view give the heights
   10. 10Shading on the top view shows height
   11. 11Different buildings can share a view
   12. 12Each view rules out more buildings
   13. 13Build a building from its three views
   14. 14The most cubes that fit two views
   15. 15The fewest cubes that fit two views
   16. 16Draw a view on grid paper
   17. 17An isometric drawing shows three sides at once
   18. 18Turn the building to check a view
   19. 19Views of an everyday object: a mug
   20. 20A line in a view shows where the height changes
   21. 21Match the views to the object
   22. 22Builders call them plans and elevations

   Start the lesson →Test yourselfAbout this topicPlayBuild the View

More to play

Games, playgrounds and stories for the whole unit. Nothing here is recorded.

• PlaygroundAngle LabSwing two angles as far as they go — the third answers
• PlaygroundFence SandboxTwo pens, four dials — grass and fence disagree
• PlaygroundCoordinate PlaygroundSlide, flip and turn a shape — the pairs keep score
• StoryA Pen for PipSame grass, less fence — if you pick the right shape.
• StoryThe Stage PlanSame floor for dancing. Very different bill for the lights.
• StoryThe Treasure GridThe map is a grid. The clue is a pair of numbers.