What happens when you multiply an odd number by an odd number? Scholars find out as they focus on patterns and number attributes while solving 48 multiplication problems. The first set has them multiply two odd numbers and record what they notice about the products. Next, they multiply two even numbers and make another observation. Finally, they multiply odd numbers by even numbers and make a third observation. Be sure to extend this by asking kids why they think these patterns show up. No factors exceed 10 in these equations.