P4 Maths
Heuristics
- Make a supposition
- How to name an angle
- How to measure an angle (guide given)
- How to measure an angle with a protractor
- How to draw an angle
- Drawing an 8-point compass
- Listing turns and their corresponding angle measurements
- Lesson: http://vizia.co/videos/a34413b39f92b82df1ee83/share
- Remember:
- Class activity (turning around with the class):
- Applying turns on an 8-point compass
- Lesson: http://vizia.co/videos/1a1afba0bd2993bf8d04a9/share
- Consolidation: Pick random direction
- Fraction of a turn
- Turns (in degrees)
- 8 point compass
- Apply turns on an 8-point compass (when the destination is given, find the origin)
- Try this out: You were facing the whiteboard. What direction (clockwise) did you have to turn to face outside the class (if you do a 1/4 turn)? What direction do you now have to turn to face the whiteboard again (if you were to do a 1/4 turn again)? What pattern did you notice?
- Consolidation: Pick random direction
- Fraction of a turn
- Turns (in degrees)
- 8 point compass
- Question type
- How many degrees was the turn?
- Lesson: http://vizia.co/videos/93e22363582c2bcebefc23/share
- Consolidation: Pick random direction
- 8 point compass
- Finding the direction of something in relation to another:
- Lesson: http://vizia.co/videos/a478a6acae2f16d16722a3/share
- Consolidation: Using google maps, get pupils to name a famous place in Singapore and ask questions from there
- Challenge: referring to this map, Jubilee Square is south-east of ______. How can you solve this question?
Squares and rectangles
- Properties of rectangles and squares
- Listing the properties of rectangles (number of pairs of perpendicular sides, number of right angles, number of pairs of equal sides, number of pairs of parallel sides)
- Listing the properties of squares
- Listing the differences and similarities between the properties of squares and rectangles
- Using the properties of squares, given the length of one side of a square, find the other side
- Using the properties of rectangle, given the length or breadth of a rectangle, find the missing side
- Introductory song: Rectangles (1) : https://www.youtube.com/watch?v=2WHJio4TRNY
- Rectangles song: https://www.youtube.com/watch?v=9JP-ZhwrxzI
- Square song: https://www.youtube.com/watch?v=rb8Y38eilRM
- Lesson: http://vizia.co/videos/cf1e24e742742c29028b7c/share
- Introductory activity: Worksheet
- Knowing that the angle of a corner of a square or rectangles is 90 degrees, given part of the angle, finding the other part
- Drawing a square or a rectangle on a square grid
- Demonstration: https://youtu.be/o7GH_xVZ4YY
- Drawing a square or a rectangle on a dotted grid
- Demonstration: https://youtu.be/uLaKJPtWX7s
- Drawing rectangles and squares
- Given the dimensions of a square, draw and label a square
- Given the dimensions of a rectangle, draw and label a rectangle
- Lesson: http://vizia.co/videos/e9049202c1afdaa5b0576a/share
- Just for fun: https://studio.code.org/s/frozen/stage/1/puzzle/1
- Given the dimensions of a folder rectangle, find the missing sides
- Identify number of squares and rectangles visualised, given a shape with multiple squares
Symmetric
- Distinguishing between symmetric and non-symmetric figures
- Introductory song: https://www.youtube.com/watch?v=lmuRJPGrdBY
- Creating a symmetric figure
- Finding the line(s) of symmetry on a symmetric figure
- Determining if a line is a line of symmetry on a figure
- Drawing a symmetric figure, given half of it on a square grid
- Shading parts of a square grid to get a symmetric figure, given half of it
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