Two video lessons are available on this topic with lesson notes, exercises and solutions. The first covers the easier equations with a single x^{2} term and the second covers equations with a multiple x^{2} term as well as the difference of two squares factorisation which we will do next lesson.

Higher Tier Grade Boundaries (out of 240 possible marks):

Sitting

Grade 9

Grade 8

Grade 7

Grade 6

Grade 5

Grade 4

Grade 3

Jun 2017

190

157

124

96

68

41

27

Nov 2017

189

150

112

85

58

32

19

Jun 2018

202

170

139

109

79

50

35

Nov 2018

194

159

125

95

66

37

22

Jun 2019

198

167

137

108

80

52

38

Nov 2019

197

165

133

103

73

43

28

Nov 2020

189

157

126

96

66

37

22

Average %

81%

67%

53%

41%

29%

17%

11%

These are the higher tier grade boundaries for all past sittings of the new Edexcel GCSE Maths. The first two sets of exams were not at all popular with students but the June 2018 exams were viewed as more reasonable. The grade boundaries were higher but students felt they had more opportunity to demonstrate their skills and knowledge. Grade boundaries for November exams are not as reliable as boundaries for June exams because there are far fewer students taking what essentially are re-sit exams.

All except the November 2020 exams were taken before the pandemic but give an indication of what you can expect both when completing past papers and when sitting your actual GCSE exams in May/June 2023.

Below is the density worksheet from which you attempted several questions in class.

As part of your revision I suggest you try a few more questions - some of them require volume formulae you have not yet met but most are suitable now. The solutiions to the worksheet are also uploaded below.