The Daily Tangram Puzzle
http://www.shockwave.com/gamelanding/daily-tangram.jsp

Math is Fun- Tangrams
https://www.mathsisfun.com/games/tangrams.html

ABCYA Tangrams Game- Try the Higher Levels!
http://www.abcya.com/tangrams.htm

Four Piece Tangrams
https://www.mathplayground.com/mobile/pre_tangram_puzzles.html

Parking Lot- Problem Solving
http://www.mathplayground.com/logic_parking_lot.html

Coffee Shop- Problem Solving
http://www.coolmath-games.com/0-coffee-shop/index.html

Sudoku
http://www.coolmath-games.com/0-sudoku

Kakuro- "Sudoku's Cousin"
http://www.coolmath-games.com/0-kakuro/index.html

Squigly's Brainteasers
http://www.squiglysplayhouse.com/BrainTeasers/Rebus.php

Count the Cubes- Spatial Awareness/Reasoning
http://www.mathplayground.com/cube_perspective.html