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Lesson 1 Contents Solve problems using the 4-step plan Objective

Lesson 1 Contents 4-Step Plan 1.Explore * Read the problem carefully * What facts do you know? * What do you need to find out? * Is enough information given? * Is there extra information?

Lesson 1 Contents 4-Step Plan 2.Plan * How do facts relate to each other? * Plan a strategy for solving the problem * Estimate the answer Note: Often the word “about” is used instead of estimate

Lesson 1 Contents 4-Step Plan 3.Solve * Use your plan to solve the problem * If your plan does not work, make a new plan * What is the solution?

Lesson 1 Contents 4-Step Plan 4. Examine * Reread the problem * Does the answer fit the facts in the problem? * Does the answer make sense? Note: If the answer does not fit the facts or make sense use a different plan

Lesson 1 Contents 4-Step Plan Important Note: Numbers do not always appear in the order in which they should be included in the equation to solve the problem

Lesson 1 Contents Key Words & Phrases in Math AdditionSubtractionMultiplicationDivision PlusMinusTimesDivided by SumDifferenceProductQuotient TotalLessMultiplied by In allSubtractof

Lesson 1 Contents Example 1Use the Problem-Solving Plan

Example 1-1a MONEY After shopping at the mall, you came home with $3. You spent $4 on candy, $8 on a movie, and $5 on arcade games. How much money did you start with? ExploreRead the problem carefully What facts do we know? Came home with $3 Spent $4 on candy Spent $8 on a movie Spent $5 on arcade games 1/1

Example 1-1a MONEY After shopping at the mall, you came home with $3. You spent $4 on candy, $8 on a movie, and $5 on arcade games. How much money did you start with? ExploreRead the problem carefully What do we need to find out? How much money did you start with? 1/1

Example 1-1a MONEY After shopping at the mall, you came home with $3. You spent $4 on candy, $8 on a movie, and $5 on arcade games. How much money did you start with? ExploreRead the problem carefully Is there enough information to solve the problem? Is there extra information? 1/1

Example 1-1a MONEY After shopping at the mall, you came home with $3. You spent $4 on candy, $8 on a movie, and $5 on arcade games. How much money did you start with? PlanHow do the facts relate to each other? Have $ Spent $ $3 $4 $8 $5 1/1

Example 1-1a MONEY After shopping at the mall, you came home with $3. You spent $4 on candy, $8 on a movie, and $5 on arcade games. How much money did you start with? PlanHow are we going to solve the problem? Have $ Spent $ $3 $4 $8 $5 Add what you have to what you spent 1/1

Example 1-1a MONEY After shopping at the mall, you came home with $3. You spent $4 on candy, $8 on a movie, and $5 on arcade games. How much money did you start with? PlanLet’s estimate our answer Have $ Spent $ $3 $4 $8 $ is about is about 10 And is about 20 1/1

Example 1-1b ExamineIs the answer reasonable? Answer: $20 SolveUse your plan to add what you have to what you spent $ Started With = $3 + $4 + $8 + $5 $ Started With = $20 Does the answer fit the facts given? Does the answer make sense? 1/1

Example 1-1c HOCKEY During the regular season, David scored 18 more goals than Bobby. Bobby scored 14 goals. How many goals did David score during the regular season? Answer: 32 goals * 1/1

End of Lesson 1 Assignment Lesson 1:1 Plan for Solving Problems All