The use of colour in writing Mathematics

1. Colour in Mathematics
The use of colour to add clarity
Colleen Young

2. Algebra – Like terms
6a+4b+2a-5b
= 8a-b
The use of colour helps emphasise which
sign is associated with each term

3. Algebra – equating coefficients
x3-3x2-6x+8
= x3+ax2-8x-x2-ax+8
-3=a-1
-6=-8-a

4. Algebra – expanding brackets

5. Algebra - Factorisation
5x2y + 15xy2
5xxy + 5×3xyy
5xy(x + 3y)
Students often find this method helpful

6. Inequalities
Show graphically
the region
satisfying the
following
inequalities
x ≥ 2
y ≥ 1
x+y ≤ 5
Note – required
region left
unshaded

7. Co-ordinate Geometry

8. Decision Mathematics
Dijkstra’s Algorithm

9. Worked Solutions
The use of colour can help clarity in online
worked solutions for students.
Interestingly, some students prefer a
series of still images with no sound to
videos as they can really dictate the pace
themselves.
Some examples follow...

10. Worked Solutions

11. Worked Solutions

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21. Worked Solutions

23. Mathematics for Students Mathematics, Learning and Technology