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## Choose your subject

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L O A D I N G

### KS 3

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### How it works

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### Area

1
Calculating the Area of a Rectangle

2
Calculating the Area of a Rectangle Common Mistakes

3
The formula of the Area of a Triangle

4
Calculating the Area of a Triangle

5
The formula of the Area of a Parallelogram

6
Calculating the Area of a Parallelogram

7
Calculating the Area of a Trapezium

### Compound Areas

8
Calculating Compound Areas

9
Compound Areas Involving Different Shapes Part 1

10
Compound Areas Involving Different Shapes Part 2

11
Compound Area where you're not given all the lengths

### Surface Area

12
Surface area of a cuboid

13
Surface area of a triangular prism

14
Surface area of a cylinder

15
Surface area of a sphere (Higher Only)

16
Surface area of a hemisphere exam question (Higher Only)

17
Curved surface area of a cone (Higher Only)

18
Calculating the surface area of a frustum (Higher Only)

### Volume

19
Volume of a cuboid

20
Calculating the volume of any prism

21
Volume of triangular prism

22
Volume of a cylinder

23
Finding the height of a cylinder using its volume (Higher Only)

24
Volume of a sphere (Higher Only)

25
Volume of a cone (Higher Only)

26
Volume of a cone exam question (Higher Only)

27
Volume of a frustum (Higher Only)

28
Volume of a square based pyramid

### Circles

29
Circumference of a circle

30
Circumference of a circle leaving your answer in terms of Pi (Higher Only)

31
Perimeter of a semi-circle

32
Length of an arc (Higher Only)

33
Area of a circle

34
Area of a semi-circle

35
Area of a circle, leaving your answer in terms of Pi (Higher Only)

36
Area of a sector (Higher Only)

### Circle Geometry (Higher Only)

37
Angle in a semi-circle is 90 degrees

38
Sneaky isosceles

39
Angle at centre is twice angle at circumference part 1

40
Angle at centre is twice angle at circumference part 2

41
Angle at centre is twice angle at circumference part 3

42

43
Angles in the same segment are equal

44
Tangent meets radius at 90 degrees

45
Tangents that meet at a point are equal in length

46
Alternate segment theorem part 1

47
Alternate segment theorem part 2

48
3 letter angle notation in circle geometry

### Angles

49
Naming angles

50
Proving angles on a straight line add to 180

51
Angles on a straight line

52
Angles on a straight line - Common Mistake

53
Angles on a straight line - Exam style question

54
Proving the angles around a point add up to 360

55
Angles around a point

56
Angles around a point - Exam style question

57
Finding angles in quadrilaterals

58
Finding angles in a triangle

59
Introduction to Isosceles triangles & finding the base angles

60
Finding angles in Isosceles triangles

61
Finding angles in Isosceles triangles - Exam style question

62
Introduction to Equilateral triangles

63
The 4 types of Triangles

64
Vertically opposite angles

65
Vertically opposite angles exam question

66
3 letter angle notation

### Angles on Parallel Lines

67
Alternate angles on parallel lines

68
Corresponding angles

69
Co-interior angles

70
Finding angles on parallel lines exam question

### Measuring Angles

71
Introduction to the parts of a protractor

72
How to use a protractor

73
Exam tip for measuring difficult angles

### Polygons

74
Introduction to polygons

75
Introduction to interior angles and notation

76
Finding interior angles

77
Finding external angles

78
Polygons exam question

### Properties of Shapes

79
Kites

80
Parallelograms and Rhombuses

81
Trapeziums

### Midpoints of Lines

82
Finding the Midpoint of a Line Joining 2 Points

83
Finding the Midpoint of a Line Joining 2 Points Exam Question

### 3D Coordinates (Higher Only)

84
x, y, z coordinates

85
Finding the Midpoint of a Line Joining 2 3D coordinates

### Converting Units of Length, Area and Volume

86
Converting units of area

87
Converting units of volume part 1

88
Converting units of volume part 2

### Similar Triangles and Similar Shapes (Higher Only)

89
Similar triangles introduction

90
Similar triangles part 1

91
Similar triangles part 2

92
Similar triangles part 3

93
Proving that triangles are similar using lengths
94
Proving that triangles are similar using angles
95
Scale factors for area's of similar shapes

96
Scale factors for volume's of similar shapes

97
Similar Shapes exam question

### Loci and Constructions

98
Perpendicular Bisector
99
Perpendicular line from a point on a line
100
Perpendicular line from a point to a line
101
Angle bisector
102
Drawing an equilateral triangle
103
Drawing an isosceles triangle
104
Drawing a scalene triangle
105
Drawing a 60$^\circ$ angle
106
Drawing a 45$^\circ$ and 30$^\circ$ angle
107
The rules of Loci

108
Drawing boundaries around shapes
109
Shading boundaries inside shapes

### Bounds (Higher Only)

110
Upper and lower bounds of discrete numbers

111
Upper and lower bounds of continuous numbers

112
Calculations with bounds adding bounds

113
Calculations with bounds subtracting bounds

114
Calculations with bounds multiplying bounds

115
Calculations with bounds dividing bounds

### Converting Metric Units

116
Converting metric units of length part 1

117
Converting metric units of length part 2

118
Converting units exam question (length)

119
Converting metric units of mass part 1

120
Converting metric units of mass part 2

121
Converting metric units of volume and capacity part 1

122
Converting metric units of volume and capacity part 2

123
Converting units exam question (capacity)

124
Converting speeds 1 step problems

125
Converting speeds 2 step problems

### Converting Imperial Units

126
Converting imperial units of length

127
Converting lengths 1 step problems

128
Converting lengths 2 step problems

129
Converting imperial units of mass

130
Converting mass 1 step problems

131
Converting mass 2 step problems

132
Converting imperial units of capacity

133
Converting capacity 1 step problems

134
Converting volume and capacity 2 step problems

### Pythagoras Theorem

135
Pythagoras theorem finding the longest side

136
Pythagoras theorem finding the shorter side

137
Pythagoras theorem problems (exam question)

### Right-angled Trigonometry

138
How to label a triangle

139
Finding a length

140
Finding an angle

### Non-right Angled Trigonometry (Higher Only)

141
Sine rule finding a length

142
Choosing which rule to use and labelling the triangle

143
Cosine rule finding a length

144
Cosine rule finding an angle

145
Area of a non-right angled triangle

146
Sine Rule Finding an Angle Part 1

147
Sine Rule Finding an Angle Part 2

### 3D Pythagoras (Higher Only)

148
3D Pythagoras in a cuboid

149
3D Pythagoras in a pyramid

### 3D Right-angled Trigonometry (Higher Only)

150
3D Trigonometry in a cuboid

151
3D Trigonometry in a Pyramid

### Bearings

152
Rules of bearings

153
Introduction to bearings Part 1

154
Introduction to bearings Part 2

155
Simple bearings questions 1

156
Simple bearings question 2

157
Sketching simple Bearings questions

158
Bearings questions involving Trigonometry part 1

159
Bearings questions involving trigonometry part 2

160
Bearings questions involving Trigonometry part 3

### Density

161
The different units of density

162
Simple Density Questions Part 1

163
Simple Density Questions part 2

164
Questions involving mixing 2 different liquids

### Congruence

165
Congruent Shapes

166
Proving congruence SSS

167
Proving congruence RHS

168
Proving congruence SAS

169
Proving congruence AAS

170
Proving congruence exam style question 1

171
Proving congruence exam style question 2

### Translations

172
Translations

173
Translations exam question

### Reflection

174
Reflecting shapes in the $x$ and $y$ axis

175
Reflecting shapes in the line $y=5$ ${ }$ $x=6$

176
Reflecting shapes in the line $y=x$

### Rotation

177
Rotation about a centre part 1

178
Rotation about a centre part 2

179
Finding the direction and angle of rotation

180
Finding the COR (centre of rotation) (Higher Only)

### Enlargements

181
Enlarging shapes

182
Enlarging shapes exam tip

183
Enlargement with a centre of enlargement

184
Enlargement with a fractional scale factor (Higher Only)

185
Enlargements with a negative scale factor (Higher Only)

186
Finding the centre of enlargement

187
Finding the scale factor of enlargement

188
Finding the scale factor of an inverted enlargement (Higher Only)

### Describing Single Transformations

189
Describing single transformations - How to score full marks

190
Describing single transformations - Exam Tip

### Vectors

191
Introduction to vectors

192
Writing and drawing column vectors

193
Subtracting vectors

194

195
Reversing the direction of vectors

196
Multiplying vectors

197
Vector problems

198
Vector problems with midpoints

199
Vector problems with ratios

200
Proving vectors are parallel

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