Use these bright, tactile worms to help children understand and to make comparisons and begin to explore standard units. Contains 80 worms in 5 colours, from 50mm to 200mm long. A superb resource for the KS1 classroom or for older children with special needs.

Reasons to Love:

•A perfect way to introduce and explore standard units of length.

•Children can compare/order, measure and then convert between mm/cm and vice versa as well as combining worms to estimate and total different lengths.

•Highly visual way of estimating differences in length, whilst also being an excellent resource for children with sensory needs or those who need further development when it comes to fine motor skills.