New
New
Year 1

Estimate and measure length and record results in a table

I can estimate length, use a ruler to check my estimate and record these results in a table.

New
New
Year 1

Estimate and measure length and record results in a table

I can estimate length, use a ruler to check my estimate and record these results in a table.

Lesson details

Key learning points

  1. When you estimate length, you think carefully and make a sensible guess.
  2. When you find a measurement, you use a ruler so it is more accurate.
  3. Estimates and measurements can be recorded in a table.
  4. Information in a table can be used to describe and compare lengths.

Common misconception

Children may try to estimate length without aligning their object with the start of the known length (such as a 10 cm strip of paper).

Each time you make an estimate, model aligning the object you are measuring with the start of the strip of paper. Make links to when we measure with a ruler, knowing we always have to line up the object we are measuring with 0 cm.

Keywords

  • Estimate - To find a value that is close enough to the right answer, usually with some thought or calculation involved.

  • Measure - To find a number that shows the size or amount of something.

  • Table - Information arranged in rows and columns.

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
Which object measures about 1 cm?
A teddy bear
Correct answer: A ladybird
A glue stick
Q2.
Which object measures about 10 cm?
Correct answer: Paper
Paperclip
Button
Q3.
Which is the best estimate for the length of this playdough snake?
An image in a quiz
9 cm
Correct answer: 7 cm
5 cm
Q4.
Which of these has used '5 and a bit' correctly to estimate the length of this playdough snake?
An image in a quiz
Correct answer: I estimate that this snake is about 8 cm long because 5 and 3 is equal to 8
I estimate that this snake is about 7 cm long because 5 and 2 is equal to 7
Q5.
I think that a good estimate for the length of this block is ___ cm.
An image in a quiz
8
7
Correct answer: 6
Q6.
I think that a good estimate for the length of this feather is cm.
An image in a quiz
Correct Answer: 8, 8 cm

6 Questions

Q1.
Which of these is the best estimate for the length of this leaf?
An image in a quiz
6 cm
Correct answer: 8 cm
10 cm
Q2.
Choose the best heading for this part of the table.
An image in a quiz
length
Correct answer: object
leaf
Q3.
Alex says, 'I think this leaf is about 6 cm long.' Is this an estimate or a measurement?
An image in a quiz
Correct answer: estimate
measurement
Q4.
Jun says, 'This leaf is 5 cm long.' Is this an estimate or a measurement?
An image in a quiz
estimate
Correct answer: measurement
Q5.
Look at the table. For which object was the estimate and measurement the same?
An image in a quiz
Correct Answer: stick
Q6.
Look carefully at the table. Which sentences are correct?
An image in a quiz
The stick is longer than the feather.
Correct answer: The leaf is the shortest object.
The estimate and the measurement for the leaf are the same.
Correct answer: The feather is the longest object.