Let a, b and c be the pear numbers.
a + b is a square number
b + c is a square number
c + a is a square number
Topics: Starter  Arithmetic  Number
2 of my pupils in @Class4Highpri completed the square number task before me. JP was really quick. Totally fascinated by their ideas/ strategies . https://t.co/VjY8GIHgHx pic.twitter.com/nuiN3UUFWk
— Class 4 Highfields (@Class4Highpri) January 13, 2021
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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=January8 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to a similar activity.
Here is the URL which will take them to another activity involving square numbers.
See the National Curriculum page for links to related online activities and resources.