3.1.Comparing numbers
3.2 Tens and ones
3.3. Addition and subtraction
3.4. Addition and subtraction word problems
3.5. Revision 1
3.6. Multiplication table for 2
3.7. Multiplication tables for 3
3.8. Double and half
3.9. Multiplication word problems
3.10. Revision 2
3.11. Repeating pattern
3.12. Count sides and compare
3.13. How long
3.14. How heavy
3.15. REVISION 3