Illustrative Mathematics
How Many Days Until Summer Vacation?
On the 124th day of school, young mathematicians are asked to find out how many days are left in the 180-day school year. The teacher version to the task offers several ways the problem can be solved, and can be used to guide instruction...
Curated OER
Revise Counting Back in Tens
In this counting by ten learning exercise, students solve 6 problems in which the missing numbers in the number tracks are filled in to show counting backwards by ten. Number range is from 607 to 6.
Curated OER
Number Sequencing Packet
This dynamic 4-page packets challenges students to practice number sequencing. The sequences get progressively more difficult. Your class must count by ones, backwards, by twos, and by threes. Students can complete this packet as an...