Solve problems by measuring different lengths in cm using a ruler
Lesson details
Learning outcome
I can solve problems by using a ruler accurately to measure lengths in centimetres.
Key learning points
- When using a ruler always measure starting from zero cm.
- Measuring length can help you find out if something will fit inside a container or not.
- You can tell 'first, then, now' stories that involve length.
Keywords
Longer than - An object has more length than another.
Shorter than - An object has less length than another.
First - The 'first' part of a 'first, then, now' story represents an amount that was already there.
Then - The 'then' part of a 'first, then, now' story represents an amount that was added or subtracted.
Now - The 'now' part of a 'first, then, now' story represents the amount that there is at the end of the story.
Common misconception
Children may find it difficult to identify the 'then' part of the story because it is not found by measuring the length of the object.
Encourage children to make jumps with their finger on the ruler to demonstrate how many cm are between the 'first' length and the 'now' length.
Teacher tip
Look for opportunities for children to explore more 'first, then, now' and 'will it fit' problems in their everyday environment, such as measuring a lunchbox to see if a banana will fit inside, or growing their own plants in a science lesson and measuring how much they have grown each week.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Complete the sentence. The pen is _________ than the pencil.
Q2.How long is the pen?
Q3.The car is 10 cm long. True or False?
Q4.Complete the sentence. The tower of bricks is cm tall.
Q5.What mistake has Jun made?
Q6.Jun thinks that both the robots are the same height. Is he correct?
Assessment exit quiz
6 Questions
Q1.Jacob’s pencil case is 18 cm long. Which of these items will fit in Jacob’s pencil case?
Q2.Which picture matches the story? First, the plant was 10 cm tall. Then, it grew 2 cm taller. Now, the plant is 12 cm tall.
Q3.Order the steps of the story so that they match the picture.
Q4.What is the final part of the story? First my plant was 10 cm tall. Then it grew 2 cm taller.
Q5.What number is missing from the story? Use the picture to help. First, I made a bracelet that was 10 cm long. Then I added a ___ cm bead. Now my bracelet is 13 cm long.
Q6.Complete the ‘First, then, now’ story using the picture. First the bracelet was 7 cm long. Then I added a 4 cm bead. Now the bracelet is ___ cm long.
To help you plan your 1 maths lesson on: Solve problems by measuring different lengths in cm using a ruler, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Solve problems by measuring different lengths in cm using a ruler, 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 1 maths lessons from the Numbers 0 to 20 in different contexts unit, dive into the full primary maths curriculum, or learn more about lesson planning.