On a midsummer's night, the Marching Bat Band makes a rare appearance. Its members are grouped in formations that demonstrate multiplication from 2 x 2 up to 10 x 10. "A witty combination of counting book and theatrical experience."—SLJ
2.OA.C.4 Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.