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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Estimating

This series of ten interactive excel sheets explore estimating. Answers can be checked each time and new questions generated at the click of a button.

The first sheet shows a number line from 0 to 20, 50 or 100. Students have to state what number the marker is showing. Clicking on the help button will make more numbers appear on the line.

In the second sheet students are given a selection of text in a table and are asked to estimate how many words there will be in the whole paragraph. The words in each line can be calculated, as can the running total.

The third sheet shows a jar partially full with sweets. Given the total number of sweets that will fit in the jar, students are asked to estimate the number of sweets there are. Three options are given, and the jar can then be filled up to the top.

The fourth sheet shows a series of numbers lines between 0 to 1000, or -20 to 0. Students have to estimate the value shown by the marker. Clicking on the help button will make more numbers appear on the line.

The fifth sheets asks “given the people already in the queue how many people would there be in the full queue going to the ‘STOP’ sign?”

The sixth sheet shows a chocolate box with some chocolates missing. Students have to state what fraction of the sweets have gone or are left from three possible options. Click ‘Hint’ to arrange the sweets together in the box.

The seventh sheet shows a series of numbers lines between 0 and 1000, or -20 to 0. Students have to estimate the value shown by the marker. Clicking on the help button will make more numbers appear on the line.

In the eighth sheet students are given only part of a picture showing a colony of flamingos. From this they have to estimate how many flamingos are in the whole image. The image can be revealed one part at a time. The following sheet repeats this process for an image of a swarm of bees.

The final sheet shows a shows a 747 plane with a seating plan. Students have to state what fraction of the seats have been booked.

Note:
This program was designed to be viewed on a screen with a resolution of 1024 x 768. Users may have to adjust the resolution of their screen for the pages to display as was originally intended. The program uses macros which need to be enabled on the users machine.

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