Place Value:

• https://www.coolmath4kids.com/manipulatives/base-ten-blocks

• https://www.iknowit.com/lessons/b-place-value-up-to-thousands.html

• https://www.sheppardsoftware.com/mathgames/placevalue/fruit_shoot_place_value.htm

• https://www.sheppardsoftware.com/mathgames/placevalue/mathman_place_exp.htm

• https://www.youtube.com/watch?v=a4FXl4zb3E4&ab_channel=MathSongsbyNUMBEROCK

Addition:

• https://ns.mathgames.com/skill/3.7-complete-the-equation-with-sums-up-to-1000

• https://ns.mathgames.com/play/candy-stacker.html

• https://www.mathplayground.com/brain_workouts/brain_workout_01_subtraction.html

Subtraction:

• https://mrnussbaum.com/fun-regrouping-in-subtraction-games-from-computermice

Rounding:

• https://www.abcya.com/games/rounding_numbers

• https://mrnussbaum.com/half-court-rounding-online-game

• https://www.sheppardsoftware.com/mathgames/round/mathman_round_thousands.htm

• https://www.aaamath.com/g2_32_x1.htm

Patterning:

• https://www.abcya.com/games/shape_patterns

• https://www.free-training-tutorial.com/math-games/pattern-crack-the-safe-game.html

• www.free-training-tutorial.com/pattern/towncreator/tc-pattern.html

• www.mathplayground.com/patternblocks.html

• www.mathcats.com/explore/tessellations/ocean.html