12cm
10cm
Topics: Starter  Geometry  Mensuration  Problem Solving
Had a wonderful “wow” moment with y5 today when calculating perimeters . This shape looked really complicated at first .
— Perton Maths Dept (@PertonMaths) October 10, 2018
Thanks for the visual @Transum
#PertonMaths #perimeter https://t.co/xW0gK1aZwY
A mind bending start to our Maths lesson in P.5 today.....can you see how you could work out the lengths of the missing sides to be able to calculate the perimeter? Visit https://t.co/8SZ7njkjbP
— Bankton Primary Sch (@banktonps) April 3, 2019
for a hint or, ask P.5! We solved it!#mathsisfun pic.twitter.com/4i7KZSMfdZ
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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=June9 However it would be better to assign one of the student interactive activities below. 

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See the National Curriculum page for links to related online activities and resources.