**Kwethemba Moyo**

## Years 4 – 7 Addition/subtraction of 2 digits numbers

*By Kwethemba Moyo On 30 April, 2020 · Leave a Comment*

Below are three addition- subtraction problems that are classified into Level 1, Level 2, and Level 3.

Level 1: Find the sums and difference of the numbers indicated on the diagram (vertically/horizontally)

Level 2: Fill in the empty boxes such that the sums (difference) of the horizontally and vertically arranged numbers satisfy the given […]

## Year 11- 12 Quadratic sequences

*By Kwethemba Moyo On 30 April, 2020 · Leave a Comment*

A sequence is defined by the formula an = n2 – 2n + 1.

(a) Calculate the first 8 terms of the sequence.

(b) Calculate the first difference between the terms.

(c) Calculate the second difference between the terms.

(d) What can you say about the results you obtained?

Please click Guide for Home […]

## Year 10 – 12 Linear Sequence

*By Kwethemba Moyo On 21 February, 2020 · Leave a Comment*

1.1 The square grids below the continuous line depict negative numbers and those above the line positive numbers. Study the square grids shown above with black squares forming a pattern. How is the pattern growing? Create square grids 9, 10 and 11; complete them with black squares to further develop the […]

## Years 10 – 12 Graphing Quadratic Equations

*By Kwethemba Moyo On 15 October, 2019 · 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?

[…]

## Years 10 – 12 Quadratic Equations

*By Kwethemba Moyo On 14 September, 2019 · Leave a Comment*

John plans to get the minimum possible Diamond Razor Mesh fencing material, as a security measure to discourage entry into his dam. He finds out that the rectangular shape drawn around the dam picture can help. The dimensions are given in algebraic form, in metres. Find an expression for the area of this […]

## Years 7 – 10 ALGEBRAREA Product of two brackets and area

*By Kwethemba Moyo On 15 August, 2019 · Leave a Comment*

1. You have 2 blue shapes, 3 green and 5 brown. Describe their properties.

2. Find the areas in square units of the 3 pieces blue, green and brown.

3. Build one big geometrical shape using all 10 pieces, placing them edge to edge. Draw […]

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