Multiply a two-digit by a one-digit whole number using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. Multiply whole numbers using place value strategies & the properties of operations.

Beavers are back in Britain—charming many Britons, perturbing others, and all the while stimulating a healthy debate about whether the island nation is ready to embrace a wilder future.

Hum along with a singing squirrel who prompts a young boy to "get outside" to observe and enjoy the wonders [...]