**"Lesson Activities"**

## March 1 Lesson Activities to Develop Understanding and Skills

*By toni On 27 February, 2021 · Leave a Comment*

GRADE 4 PROPERTIES OF 2D SHAPES

GRADE 5 PROPERTIES OF 2D SHAPES

GRADE 6 DATA HANDLING

GRADE 7 PROPERTIES OF 2D SHAPES

GRADE 8 FUNCTIONS AND RELATIONS

GRADE 9 FUNCTIONS AND RELATIONS

GRADE 10 EQUATIONS AND INEQUALITIES

GRADE 11 NUMBER PATTERNS

GRADE 12 FINANCE GROWTH AND […]

## Is a Square a Rectangle?

*By toni On 26 February, 2021 · 4 Comments*

Make a record of all the rectangles that you can find in this shape.

Which rectangles are exactly the same (congruent)?

Which rectangles are similar?

Is a Square a Rectangle – Template

Click here to download the IS A SQUARE A RECTANGLE? worksheet.

Click here to download the NOTES FOR TEACHERS.

[…]

## Intersections

*By toni On 13 February, 2021 · Leave a Comment*

(1) Plot the graphs of the straight lines y = x, y = 1.1x – 0.2

and y = 0.9x – 0.1

What do the graphs tell you about the solutions to the two pairs of simultaneous equations y = x y = 1.1x – 0.2 and y = x y = 0.9x – 0.1 […]

## Graphing Quadratic Equations

*By Kwethemba Moyo On 13 February, 2021 · Leave a Comment*

Graph $y={ x }^{ 2 }-2x-1$ .

1. What type of an equation is this?

2. Remember the general form of an equation of this nature: $y={a x }^{ 2 }-bx-c$

When $a > 0$ the graph is $\cup$ shaped and when $a < 0$ it is $\cap$ shaped. What is the situation in our problem?

[…]

## Function Game

*By toni On 12 February, 2021 · Leave a Comment*

What is the rule (or function) that gives the outputs corresponding to the inputs shown in the diagram mapping 1 to 8 and 3 to 24 etc?

The Function Game is played in silence. Learners have to guess the function in the teacher’s mind. The teacher tells the learners that she wants […]

Download the pieces of the puzzle here and cut out the 16 small triangles.

Arrange the 16 pieces into a larger triangle so that the numbers on matching edges are the same, for example .

Click here to download the POWER MATCHING worksheet.

Click here for Notes for […]

## Matchless

*By toni On 10 February, 2021 · 3 Comments*

Find values of x and y for which these five expressions all have the same value.

Do you have exactly the right amount of information or more information than you need?

Click here to download the MATCHLESS worksheet.

Click here to download the AIMSSEC Teacher Notes for MATCHLESS

This problem is adapted […]

## Difference of Squares and Area

*By toni On 10 February, 2021 · Leave a Comment*

What do you see in this image?

What is the area of the bigger square edged by dotted line segments of length a?

What is left of that area if you take away a square with edges of length b?

What is the area of the rectangle formed by the yellow […]

## Differences of Squares Investigation

*By toni On 10 February, 2021 · Leave a Comment*

1. What do you see in this picture?

Give a proof linked to this picture of the formula $a^2 – b^2 = (a + b)(a – b)$ .

2. What do you notice about the difference between squares of consecutive numbers?

Compare the differences between squares of numbers that differ by 1 […]

## Triangle Number Picture

*By toni On 5 February, 2021 · Leave a Comment*

Is a picture worth a thousand words (as the saying goes)?

This picture shows how you can fit 2 identical copies of a triangle together to form a rectangle.

Can you use it to find the number of dots in the fifth triangle number without counting the dots?

Can you find any […]

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