Baccare
What it practices
Number sense, one grade at a time: counting and comparing in kindergarten, place value and even numbers in the early grades, multiples, factors and primes in 3rd and 4th, decimals in 5th, integers and ratios in 6th and 7th, and squares, roots and one-step equations in 8th. Snake makes it a race: read the prompt, plan a path, and get there before you run into yourself.