select tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems;
Build number sense skills with this set of 30 ten and double ten frame task cards.
Build number sense skills with this set of 30 subitizing task cards.
A set of 20 open-ended problem solving task cards covering a range of mathematical concepts.
A PowerPoint with 20 open-ended problem solving questions covering a range of mathematical concepts.