Myths about teaching can hold you back
- Year 5
Compare and describe lengths using knowledge of division
I can compare and describe lengths using knowledge of division.
- Year 5
Compare and describe lengths using knowledge of division
I can compare and describe lengths using knowledge of division.
Lesson details
Key learning points
- Lengths can be compared using division.
- The stem sentence, 'The ___ is ___ times the length of the ___' can be used to compare and describe lengths.
- Comparisons of length can be represented as multiplication equations with a fractional multiplier.
Keywords
Times the length/height/depth - Times the length/height/depth is a phrase that is used to compare and describe lengths or heights. For example, one tree might be three times the height of another tree; it is three times as tall.
Unit fraction - A unit fraction is a fraction where the numerator is one.
Common misconception
Children are more familiar with multiplication resulting in an increase and so may not accept that it can also result in a decrease.
When we multiply by a unit fraction, it is the same as dividing the whole by the denominator. This results in a decrease in length.
To help you plan your year 5 maths lesson on: Compare and describe lengths using knowledge of division, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 5 maths lesson on: Compare and describe lengths using knowledge of division, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the Compare and describe measurements using knowledge of multiplication and division unit, dive into the full primary maths curriculum, or learn more about lesson planning.
Licence
Prior knowledge starter quiz
6 Questions
Q1.A piece of elastic stretches to 3 times its original length. Which bar model represents this?



Q2.The original piece of elastic was 50 cm long. How long is it now it has stretched to three times it's original length?
Q3.Hamish the cat is 4 times as tall as a mouse. If the mouse is 8 cm tall, how tall is the cat? The cat is cm tall.

Q4.How many 20s are there in 140?
Q5.45 is 15 times the size of
Q6.What number is ten times the size of 12?
Assessment exit quiz
6 Questions
Q1.Which image represents this statement? The green ribbon is one-half times the length of the white ribbon.



Q2.If the white ribbon is 14 cm long, how long is the green ribbon if it is one-half times the length?

Q3.Which equations show that one half of 14 cm is equal to 7 cm?
Q4.Lucas has spent half of his money. He has £13 left. How much money did he have to start with?
Q5.The white ribbon is the whole. Which sentence describes the length of the shorter red ribbon?

Q6.The red ribbon is one third times the length of the white ribbon. If the white ribbon is 60 cm long, how long is the red ribbon?
