Understanding Word Problems and Reasonableness

In this lesson, students learn to solve two-step word problems involving all four operations. The lesson focuses on understanding the reasonableness of answers through estimation and rounding. A practical example is given with Matthew's rock collection, where students calculate the number of rocks added daily. The lesson concludes with a redraw-write activity to reinforce problem-solving skills.

What is the main focus of this lesson?

• Understanding the history of mathematics

• Learning about different types of rocks

• Solving one-step word problems

• Solving two-step word problems using all four operations

What does it mean for an answer to be reasonable?

• It is always a whole number

• It is a random guess

• It is exactly the same as the estimated answer

• It is close to the estimated or rounded answer

How many rocks did Matthew start with?

• 35

• 173

• 208

• 107

What is the total number of rocks Matthew has now?

• 173

• 35

• 208

• 5

What is the purpose of using a tape diagram in this problem?

• To provide an artistic element to the lesson

• To visually represent the problem and aid in solving it

• To make the problem look more complex

• To confuse the students

What is the first step in solving Matthew's rock problem?

• Multiply the number of days by 5

• Subtract the initial number of rocks from the total

• Add 173 and 208

• Divide the total rocks by 7

What is the total number of rocks Matthew added?

• 35

• 208

• 173

• 5

What operation is used to find the difference in rocks?

• Addition

• Subtraction

• Multiplication

• Division

How do you find the number of rocks Matthew added each day?

• Add 35 and 7

• Divide 35 by 7

• Subtract 7 from 35

• Multiply 35 by 7

How many rocks did Matthew add each day?

• 7

• 35

• 5

• 10