Number formation display I think this is fabulous for engaging the boys. I would probably introduce one number at a time and slowly build it up.

Sophie - Grace - Nadine good maths website promoting and giving advice to practitioners and parents on how to develop maths skills: Resources - Early Years Maths

Great for developing mental maths. Could be adapted to include times tables for Year One continuous provision.

Number - find the missing numbers. Could use this with double digit numbers too:

Building numbers roll a dice count out objects to match

Shapes at School - investigate shapes by exploring your school environment, adapted from Belair on Display Projects Inspired by Neighbourhoods.