Scheme of Work—Pythagoras and Trigonometry

From Teach

Title

SCHEME OF WORK
Year 10
Higher Tier
Board: Edexcel
Geometry: Ma3 Shape, Space and Measures: Pythagoras’ Theorem and Trigonometry
Spring Term
Number of Lessons: 11 + test
National Curriculum Entry Level (KS3): 6-8
Possible upper limit GCSE grade: A*
Key Objectives:
  • Use Pythagoras' theorem in a range of contexts to find lengths of unknown sides in right-angled triangles.
  • Recall and use trigonometric ratios.
  • Solve problems in both two and three dimensions using Pythagoras' theorem and simple trigonometry.

Detail

Lesson #
Lesson Title
NC Ref
Suggested Starter
Learning Objectives
Grade
Suggested Textbook
1 recall and understand Pythagoras’ Theorem Ma3-2f
  • find square numbers and sq. roots
  • rearrange simple equations
  • rounding to sf and dp
recall and understand Pythagoras’ Theorem C Bostock L. (2002) STP National Curriculum Mathematics 8A Chapter 21
apply Pythagoras' theorem C
visualise the theorem using Perigals’ dissection C
2 Deciding whether triangles are right-angled, and proving Pythagoras' theorem. Ma3-2f
  • Identify different types of triangles: acute, obtuse, right-angled
  • a2 + b2 = c2 investigation
determine whether triangles are right-angled C Bostock L. (2002) STP National Curriculum Mathematics 8A Chapter 21
prove Pythagoras’ theorem using algebraic methods C
history of Pythagoras and applications for everyday life C
3 Finding hypoteneuse. Finding missing side lengths. Ma3-2f given the lengths of three sides, determine whether a triangle is right-angled. calculate the length of the hypotenuse using Pythagoras' theorem C Johnson T. (2006), Edexcel GCSE Mathematics Higher Tier, Linear Course, Chapter 19
recall Pythagorean triples C
find hypotenuse using the (x, y) coordinates of two points. C
4 calculate the length of an unknown side of a right-angled triangle Ma3-2f find length of missing side calculate the length of an unknown side of a right-angled triangle C Muschla, A. (1999) Math Starters, Jossey-Bass
calculate the height of an isosceles triangle using Pythagoras' theorem C
calculate the area of a triangle given the lengths of all three sides C
5 Use Pythagoras’ theorem to solve problems in 3D Ma3-2f multi-stage problems: finding the length of an unknown side Use Pythagoras’ theorem to solve problems in 3D C Porkess R. (2007) Higher MEI GCSE Mathematics, Hodder Murray Chapter 7
a2 + b2 + c2 = d2 C
find the length of a diagonal inside a square or rectangular based pyramid C
6 Introducing trigonometry Ma3-2g Identify pairs of similar triangles identify similar triangles B Smith, A. (2006) Higher GCSE Mathematics for Edexcel, Hodder Arnold, Chapters:16 and 17
define the tan ratio B
recall use of trigonometric functions on a calculator B
7 Introducing Sine and Cosine ratios Ma3-2g construct a triangular spiral define and calculate the SINE ratio in a right-angled triangle B Websites:
  • 10ticks.co.uk
  • cimt.plymouth.ac.uk
  • easymaths.com
  • examsolutions.co.uk
  • funmaths.com
  • Maths4Real (teachers.tv)
  • mymaths.co.uk
define and calculate the COSINE ratio in a right-angled triangle B
choose the correct trigonometric ratio in calculations B
8 SOHCAHTOA Ma3-2g quiz: which formula would you use to calculate the length of x? SOHCAHTOA B -
recall SIN, COS and TAN ratios using the SOHCAHTOA mnemonic B
find lengths of sides of right-angled triangles using the appropriate ratio B
9 Arctan, Arcsin and Arccos Ma3-2g trigonometry BC (before calculators) use of SIN-1, COS-1, and TAN-1 methods to determine unknown angles B -
calculate missing angles in right-angled triangles B
multi-stage problems in trigonometry B
10 Bearings Ma3-2g accurate bearings drawings bearings A -
angles of depression and elevation A
word problems A
11 Consolidation Ma3-2g pupil lead lesson, to address specific learning needs Consolidation A -
multi-stage problems using Pythagoras' theorem and trigonometry A
real-life situations and bearings A
12 Test Ma3-2f Ma3-2g - - - -
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