Six trains in red, orange, yellow, green, blue and purple, each pulling five carriages. The first two carry numbers and the last three are empty. Fifteen and twenty, thirty and forty, forty-five and fifty, sixty and seventy, twenty-five and fifty, two hundred and three hundred.
Nothing tells the child what to count by. Unlike the number line sheet, where the step sits in a circle at the start, here it has to be worked out from the gap between the first two carriages, which turns each train into a small puzzle before it becomes a counting exercise.
Two of the six trains go beyond the usual Grade 2 ground. The blue one counts by 25s, which most children meet as quarters rather than as a counting sequence, and the purple one runs into the hundreds. Both are fair for a confident second grader and worth skipping for a child who is not.
Bright color throughout, so this is the display piece of the set rather than the class-set one.