Numeracy
These are all links to external sites, which have a host of fabulous resources. All credit goes to the authors of these programs.
Counting
Counting Stick
Splat Hundred
Square
Ordinal Numbers
Number Line
Frog
Number Line
Number Line Estimates
Multiples Matrix
Hundred Square
Counter Square
Number Sequences
Shape sequencer
Caterpillar Ordering
Washing Line
Cheeky Monkey
Ordering