"Figure Me Out" math activity...great for beginning of the year or anytime!
Domino Parking Lot: Set all the dominoes out, face down. Draw one at a time. If the sum matches an empty spot on your parking lot, you can play it there. If not, turn it back over and let the next player choose. First to cover their board wins.
10 Ways to Practice Multiplication Facts beyond flashcards
"All about the number____" display
Like this idea for a math warm-up
The egg and bean game. Number sense, subtraction, addition - use other thematic hats, fruit, etc. depending on the time of year.
Here's a terrific post with directions and resources on how to introduce fractions using paper folding!
Ice cream cone craft...add up the scoops to see how much it cost.
Andy Addition - anchor chart (image only)
Measurement: standard and non-standard units anchor chart