This lesson looks at being able to convert between different imperial and metric measures and appreciating the size of each type of measure. Drawing on addition and subtraction skills, this lesson gives lots of examples, practise and help in converting between measures. The PowerPoint uses both visual and interactive exam questions, with answers included, to help learners make sense of the topic. Work on using conversion charts/ graphs are also included. This also reduces the need for printing and makes good, printable revision notes. This resource will prove useful in any maths lesson. Learning aims are also included so students can measure their level of understanding and success in class. A lesson I have enjoyed teaching myself!