Happy Numbers builds an individualized math dialogue and responds to students just the way you would: unpacking concepts step-by-step, scaffolding learning, and providing immediate feedback …

Unlike happy numbers, rearranging the digits of a -happy prime will not necessarily create another happy prime. For instance, while 19 is a 10-happy prime, 91 = 13 × 7 is not prime (but is still 10-happy).

Jul 23, 2019 · Happy Numbers is an award-winning, all-inclusive digital math curriculum for Pre-K to Grade 5, thoughtfully crafted to enhance small group instruction in your classroom.

Some numbers are happy and others are not! To find out whether a number is happy square each of its digits, add the answers and repeat. If you end up with 1 the number is happy! 1 2 + 0 2 + 0 2 = 1 …

Dec 22, 2025 · For example, starting with 7 gives the sequence 7, 49, 97, 130, 10, 1, so 7 is a happy number. The first few happy numbers are 1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, …

We teach students to think math with elements such as visual modeling, virtual manipulatives and multiple representations of math concepts to give students the opportunity to explore the meaning …

Numbers can have many different “personalities.” For example, some numbers are categorized as odd, even, square, cubed, prime or composite. Sophie Germain, a famous female mathematician, …

Pick any two-digit number (e.g. 23). Square and add the digits (4 + 9 = 13). Repeat (1 + 9 = 10). And again (1 + 0 = 1). A number is happy if it eventually gets to 1.

Integers that stabilize at 1 are called "happy numbers" and integers that fall into the loop are called "unhappy numbers." We explain how to determine whether an integer is happy or unhappy with …

A number (positive integer) is called a happy number when it is replaced by the sum of the squares of its digits on a repeated basis until the sum of the squares of its digits equals to 1.