“Numberblocks” toys are great for kids because they help children learn how to count, identify numbers and work out basic math problems.

“Numberblocks” toys are great for kids because they help children learn how to count, identify numbers and work out basic math problems.

A 5-year-old with an extraordinary passion for numbers is already testing in the 99th percentile for math.

“Numberblocks” toys are great for kids because they help children learn how to count, identify numbers and work out basic math problems.

“Numberblocks” toys are great for kids because they help children learn how to count, identify numbers and work out basic math problems.

“Numberblocks” toys are great for kids because they help children learn how to count, identify numbers and work out basic math problems.

Netflix is streaming "Numberblocks," a delightful program about math that preschoolers seem to love.