2.NBT.2. Count within 1000; skip-count by 5s, 10s, and 100s.
Identify and continue sequences involving shape, colour and numbers.
Find the correct number in a sequence. Lots of choice over level, count forwards or back, count in whole numbers, multiples of 10, multiples of 100, decimals and fractions.
An incredibly versatile teaching tool. You can change the start number and change the step size, then try and find the hidden number. Choose from several difficulty levels. Ask the children to discuss the different methods they could use to find the missing number.
Can be used to explore sequences (including negative numbers and decimals), multiplication tables, as well as reasoning about numbers.