Transum Maths Software


There are 366 different Starters of The Day, many to choose from. You will find in the left column below some starters on the topic of Estimating. In the right column below are links to related online activities, videos and teacher resources.

A lesson starter does not have to be on the same topic as the main part of the lesson or the topic of the previous lesson. It is often very useful to revise or explore other concepts by using a starter based on a totally different area of Mathematics.

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Estimating Starters:

Air Traffic Control: Work out which aircraft are in danger of colliding from their positions and direction of travel. An exercise in understanding bearings.

Angle Estimates: Estimate the sizes of each of the angles then add your estimates together.

Big Bieber: If the dimensions of an object double, its volume increases by a factor of eight.

Big Order: Estimate or calculate then put the large numbers in order of size.

Breathe Easily: How many breaths have you taken in your lifetime?

Calc-A-Hundred: A game for two players requiring a calculator and thinking skills.

Estimating: Estimate the lengths of four lines then add your answers together.

Estimating Percentages: Estimate what percentages of full circles the red sectors represent.

Hot Estimates: Estimate the number of chillies in the photograph.

Moon Lengths: Estimate the distances shown on this photograph of the moon's surface.

Peanuts and Buttons: Two questions involving estimating a quantity.

Pie Chart: An exercise in estimating what the sectors of a pie chart represent.

Positions Please: Stand at the point between the classroom walls to represent a given number.

Red Lines: Either estimate the lengths of the red lines or, if you know how, calculate how long they are.

Second Holiday: Estimate then work out the period of time equal to the given number of seconds.


Small images of these Starters | | |  Complete Index of Starters

Featured Activity

Shunting Puzzles

Shunting Puzzles

These puzzles are Transum's versions of the shunting or switching puzzles made popular by train enthusiasts and logic puzzle solvers.



Comment recorded on the 21 October 'Starter of the Day' page by Mr Trainor And His P7 Class(All Girls), Mercy Primary School, Belfast:

"My Primary 7 class in Mercy Primary school, Belfast, look forward to your mental maths starters every morning. The variety of material is interesting and exciting and always engages the teacher and pupils. Keep them coming please."

Comment recorded on the i asp?ID_Top 'Starter of the Day' page by Jan, South Canterbury:

"Thank you for sharing such a great resource. I was about to try and get together a bank of starters but time is always required elsewhere, so thank you."

Comment recorded on the 19 June 'Starter of the Day' page by Nikki Jordan, Braunton School, Devon:

"Excellent. Thank you very much for a fabulous set of starters. I use the 'weekenders' if the daily ones are not quite what I want. Brilliant and much appreciated."

Comment recorded on the 10 April 'Starter of the Day' page by Transum, :

"Sorry Mike, because some of the starters link to live data on the Internet there is no CD version. Thanks for your comments."

Comment recorded on the 25 June 'Starter of the Day' page by Inger.kisby@herts and, :

"We all love your starters. It is so good to have such a collection. We use them for all age groups and abilities. Have particularly enjoyed KIM's game, as we have not used that for Mathematics before. Keep up the good work and thank you very much
Best wishes from Inger Kisby"

Comment recorded on the 17 November 'Starter of the Day' page by Amy Thay, Coventry:

"Thank you so much for your wonderful site. I have so much material to use in class and inspire me to try something a little different more often. I am going to show my maths department your website and encourage them to use it too. How lovely that you have compiled such a great resource to help teachers and pupils.
Thanks again"

Comment recorded on the 24 May 'Starter of the Day' page by Ruth Seward, Hagley Park Sports College:

"Find the starters wonderful; students enjoy them and often want to use the idea generated by the starter in other parts of the lesson. Keep up the good work"

Comment recorded on the 5 April 'Starter of the Day' page by Mr Stoner, St George's College of Technology:

"This resource has made a great deal of difference to the standard of starters for all of our lessons. Thank you for being so creative and imaginative."

Comment recorded on the 2 April 'Starter of the Day' page by Mrs Wilshaw, Dunsten Collage,Essex:

"This website was brilliant. My class and I really enjoy doing the activites."

Comment recorded on the 3 October 'Starter of the Day' page by Fiona Bray, Cams Hill School:

"This is an excellent website. We all often use the starters as the pupils come in the door and get settled as we take the register."

Comment recorded on the 2 May 'Starter of the Day' page by Angela Lowry, :

"I think these are great! So useful and handy, the children love them.
Could we have some on angles too please?"


The ability to estimate values is an often overlooked part of Mathematics. Estimating lengths, weights, time, angles and solutions to problems should be practised regularly. Pupils should make sensible estimates of a range of measures in relation to everyday situations.

A basic ability to estimate quantities without counting, like when choosing a checkout line at the supermarket, can be called a person’s innate ‘number sense’. Practising this kind of estimating may actually improve a pupil’s ability in other areas of mathematics. This is one of the findings of research published in Psychological Science, a journal of the Association for Psychological Science.

Practising estimation can be a lot of fun when presented as a game, challenge or group activity and provides the opportunity for the teacher to introduce variety in the mathematics classroom.

Estimating Activities:

Estimating: Estimation is a very important skill. Use this activity to practise and improve your skills.

Estimating Angles: Estimate the size of the given acute angles in degrees.

Estimating Percentages: Estimate the percentages represented by the diagrams.

Estimation Golf: Play a round of golf using your estimation skills rather than golf clubs.

Snooker Angles: An online game for one or two players requiring an ability to estimate angles.

Estimating Videos:

Counting Crowds: When measuring very large data sets, like the crowd of 1.8 million who attended Obama's inauguration, often exact counting is impossible! Find out how statisticians use density samples to estimate their statistics.

Estimate Enormous Numbers: Learn how to use the powers of 10 to make amazingly fast estimations of big numbers with this animated explanation.

Estimating Worksheets:

Take Sides Questions: Thirty pairs of numbers or calculations. Which one of the pair is the largest?

Estimating External Links:

Links to other websites containing resources for Estimating are provided for those logged into 'Transum Mathematics'. Subscribing also opens up the opportunity for you to add your own links to this panel. You can sign up using one of the buttons below:


The activity you are looking for may have been classified in a different way from the way you were expecting. You can search the whole of Transum Maths by using the box below.






Is there anything you would have a regular use for that we don't feature here? Please let us know.

Recently Updated

Circle Equations

Circle Equations

Recognise and use the equation of a circle with centre at the origin and the equation of a tangent to a circle. So far this activity has been accessed 0 times and it is ready for you to enjoy!



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