There are 13 sheep in a field as shown here:
1. How many sheep can say that there is at least one other sheep here of the same colour?
2. The farmer takes one sheep from the field at random. What is the probability it is
a) Yellow b) Blue c) Green d) Not red ?
[Give your answers as decimals to two decimal places]
Topics: Starter  Probability
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=May19 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to a related student activity.
The wool on each of these sheep is of two different colours.
What is the probability of two sheep being picked at random sharing a wool colour?
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See the National Curriculum page for links to related online activities and resources.
How accurately could you estimate the number of sheep in a field without counting them? If there were only five sheep in the field your estimate would probably be very accurate but if there were fifty how close do you think your estimate might be? In the first case your estimate would have probably been perfect while in the second case you are unlikely to get it absolutely correct. What is the cut off number, between five and fifty where your estimate starts to become less accurate?
There is a sheep counting activity here on the Transum website. Try your skills and work to improve them. What strategies could you use?
Have you ever tried herding sheep? Not easy is it? The online herding sheep activity is much easier than real life herding and has proved to be a great introduction to loci.
Here is a sheepish mathematical birthday card which can be downloaded and printed.
Transum.org/Maths/Worksheet/?name=birthday_card
Finally, for the more advanced, there's a sheepthemed exam style question for you to try.
Transum.org/Maths/Exam/Question.asp?Q=289