The Sir Cumference books are a great resource for teaching geometry lessons! Set in the court of Camelot, each tale is actually a geometry lesson, with a mystery or dilemma that can only be solved with the aid of geometry knowledge and tools. Some books are great for introducing a concept, while others are best to use once students are familiar with the concepts covered.
Each of the main characters is cleverly named after geometry terms. There's:
- Sir Cumference, a knight in Camelot
- Lady Di of Ameter, his dutiful wife
- Radius, their brave and beloved son
- Perimeter, the cousin of Radius
- and others (including, of course, the legendary King Arthur)
In Primary Maths collection:
Time Matters by 
Exploring Space: Middle Primary by 
Exploring Measurement: Middle Primary
Targeting Maths: Geometry, Statistics and Probability: Middle Primary by 
Targeting Maths: Measurement: Middle Primary by 
Maths Centres Year 4 by 
Sir Cumference Classroom Activities by Use scaled instruments to measure and compare lengths, masses, capacities and temperatures (ACMMG084)
Compare objects using familiar metric units of area and volume (ACMMG290)
Convert between units of time (ACMMG085)
Use am and pm notation and solve simple time problems (ACMMG086)
Compare the areas of regular and irregular shapes by informal means (ACMMG087)
Compare and describe two dimensional shapes that result from combining and splitting common shapes, with and without the use of digital technologies (ACMMG088)
Use simple scales, legends and directions to interpret information contained in basic maps(ACMMG090)
Create symmetrical patterns, pictures and shapes with and without digital technologies(ACMMG091)
Compare angles and classify them as equal to, greater than or less than a right angle (ACMMG089)
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