Lesson 1

Order of Operations

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

Copy and have students prepare the Triangle Flash Cards: 2s and 3s.

After students sort the cards, encourage them to practice the facts in the last two piles. As the class discusses strategies, emphasize those strategies that are more efficient than others.

Home Practice Part 1 reminds students to bring home their Triangle Flash Cards for the 2s and 3s.

Inform students when the quiz on the division facts for the 2s and 3s will be given. This quiz appears in item AA.

Ongoing Assessment

Use students' Division Facts I Know charts to document their fluency with the division facts for the 2s and 3s [E9].

See the Letter Home for targeted practice ideas.

A. Triangle Flash Cards: 2s and 3s

With a partner, use your Triangle Flash Cards to quiz each other on the division facts for the twos and threes. One partner covers the corner containing the number in a circle. This covered number will be the answer to a division fact, called the quotient. The number in the square is the divisor. Use the two uncovered numbers to solve a division fact.

Separate the used cards into three piles: Facts I Know Quickly, Facts I Can Figure Out, and Facts I Need to Learn. Make a list of those facts that are in the last two piles.

Put the cards back into one pile and go through them a second time with your partner. This time, your partner covers the number in the square. This number will now be the quotient. The number in the circle is now the divisor. Use the two uncovered numbers to solve a division fact.

Separate the cards again into three piles. Add the facts in the last two piles to your list. Take the list home to practice.

Circle the facts you know quickly on your Division Facts I Know chart.