Year 1 and Year 2 units updated for Purple Mash

Over the summer we completed work to update all Year 1 and Year 2 units of work that contain lessons with 2Simple tools. Where relevant, all units have been updated to now include guidance and screenshots that reference Purple Mash, instead of the now outdated 2Simple Collection of software. We hope you enjoy these updates and the new options that Purple Mash offers in our lessons.