MathsBot is a website which has lots of manipulative tools than can be used on the interactive whiteboard. Some are tablet friendly also. Check them out.
Interactive tools and activites to aid the teaching of mathematics. Hundreds of randomly generated questions and answers.
Grade 1 / Year 2, Grade 2 / Year 3, Grade 3 / Year 4, Grade 4 / Year 5, Grade 5 / Year 6, Grade 6 / Year 7, Grade 7 / Year 8, Grade 8 / Year 9, Grade 9 / Year 10, Grade 10 / Year 11, Grade 11 / Year 12, Grade 12 / Year 13
Website/Online tool for Teacher, Website/Online tool for Student