Grade 1 Mathematics
Videos are listed chronologically by date added, beginning with the most recent
The Making of Tens
The Monsters decide to send gift boxes of fruit to their relatives. They want to send out boxes of 10 to each relative, and decide that no two boxes should contain the same combination of fruit. Addition and subtraction are used to help determine how many fruits of each kind are placed in each box.
Number Conservation, Transformation and Equivalency
The Monsters decide to plant two gardens, each with the identical number of monster melon plants. Aunt Tulip delivers two piles, each containing the same number of seeds. One pile, however, is stacked high while the other is spread out. This provides an opportunity to explore number conservation ...
Standard and Non-Standard Measurement
In building an addition to their castle, the Monsters must inform the carpenters how big they want the new room to be. The Monsters progress from describing a room that is sort of long, to pacing it out and figuring out the number of steps.