Fourth Grade Math Lesson Plan on Decimals - St. Edwards University

Subject Area/<strong>Grade</strong> Level of <strong>Lesson</strong> <strong>Plan</strong>: <strong>Math</strong> / 4 th gradeDecimals1 hour<strong>Lesson</strong> Rationale/Overview:This lesson is designed to introduce and reinforce the concepts associated with decimals.Objectives:Students will be able to:• List numbers with decimals• Solve addition and subtraction problems with decimals appropriately• Identify appropriate place value names to the right of the decimal, such as tenthsand hundredths• Calculate the appropriate place values• Compare decimal problems• Verbalize how they solved the problemTEKS:§111.16. <strong>Math</strong>ematics, <strong>Grade</strong> 4.(b) Knowledge and skills.(4.1) Number, operation, and quantitative reasoning. The student uses place value torepresent whole numbers and decimals. The student is expected to:(A) use place value to read, write, compare, and order whole numbers through999,999,999; and(B) use place value to read, write, compare, and order decimals involving tenths andhundredths, including money, using concrete objects and pictorial models.(4.3) Number, operation, and quantitative reasoning. The student adds and subtracts tosolve meaningful problems involving whole numbers and decimals. The student isexpected to:(B) add and subtract decimals to the hundredths place using concrete objects andpictorial models.(4.5) Number, operation, and quantitative reasoning. The student estimates to determinereasonable results. The student is expected to:(A) round whole numbers to the nearest ten, hundred, or thousand to approximatereasonable results in problem situations; andPrior Knowledge:Students will have had prior experience with addition, subtraction, and the place value ofwhole numbers. Students will have had prior foundation skills on decimals.

Subject Area/<strong>Grade</strong> Level of <strong>Lesson</strong> <strong>Plan</strong>: <strong>Math</strong> / 4 th gradeMaterials / resources / equipment needed:Teacher:• White board and markers• Book orders• Worksheet/handout to list the book and the price• Paper• CountersStudent:• Pencil• Each student will be provided a book order and a worksheet to record the booksthey will “purchase”• Scratch paper• Counters available if neededDaily Agenda:(What I will write on the board so that the students’ know what is going to happenduring this lesson plan).1. Objective and standard met: Adding and Subtracting Decimals2. What they should be able to do to show their understanding by the end of the lesson:Verbalize to the class how to solve addition and subtraction problems with decimals.Explain how it relates to real life scenarios.3. Major activities for lesson: Solve decimal problems, apply them to real life scenarios4. Homework or next time: Find another real life scenario where you add or subtractdecimals.Activities:Introduction:Part 1: (5 minutes)• Ask students what they know about decimals and the place values after the decimal• Have the students write down their thoughts and what they know about decimals,or have the students talk amongst the other students sitting around them aboutdecimals• Call on students to give general ideas of decimals• Recap the overall concept of decimals and write them on the boardPart 2: (5 minutes)• Give students the book orders• Allow the students two or three minutes to look through the book orders. Let themget all their excitement and curiosity out with each other.• Bring the class together, and ask the students if they can point out a number with adecimal in the book order.• Discuss money, decimals, and place values.Activity 1: (10 minutes)• Give students directions: Find two books, any two books in the book order, and addthem together.

Subject Area/<strong>Grade</strong> Level of <strong>Lesson</strong> <strong>Plan</strong>: <strong>Math</strong> / 4 th grade• Walk around the room to make sure everyone is writing the decimals correctly. Thedecimals should be in line with one another.• In groups, have the students compare and contrast the sum of the two numbers andthe price of the books added together.• Bring the class together and discuss the results.Activity 2: (30 minutes)• Reflect on what their first activity was, and then give the students directions for thesecond activity.• Directions: One of your family member’s birthdays is coming up. You need to getthem a gift and you have one hundred dollars to spend on book orders. Calculate thecost of the books you want to get for them. The price of each book ranges. The totalnumber of books you will buy could differ from the number of books the personnext to you buys. Be careful. You cannot spend over one hundred dollars. Onceyou’ve added together the cost of the books that you want buy for them, you willhave a total cost for all the books. Subtract the total cost of the books from thehundred dollars you have to figure out how much left over money you will haveafter you make the purchase.• Ask a student to repeat the directions to make sure they understand.• Let them get started on their activity.• Walk around and ask the students what books they are considering and the prices ofthe book. Make sure the students are adding the books together appropriately.Conclusion: (10 minutes)• Bring the class together as the students finish their activity.• In groups, have students compare and contrast the total cost of their books and howmany books they could buy less than one hundred dollars.• Let the groups share what they discovered.• Have a class discussion about the overall activities.• Questions to lead discussion could be:o What is something you learned today?o What is something new you learned about fractions?o What was your favorite part of today’s lesson?o What was something you didn’t like about today’s lesson?o What part did you find easy?o What part did you find hard?o Are there any methods or tools that you used to make the process easier?(For example, rounding to the nearest whole number to approximate howmuch money has been spent.)o How can you apply a problem like this to real life scenarios?Homework:Have the students add the prices of six items in a grocery store. If a student does not haveaccess to a grocery store, then give them a handout with a list of grocery store like itemswith their prices.

Subject Area/<strong>Grade</strong> Level of <strong>Lesson</strong> <strong>Plan</strong>: <strong>Math</strong> / 4 th gradeAssessment:Formative:During the activity the students will be asked:• What is a number with a decimal?• What is the place value of a number?• How do you line up numbers with decimals in an addition or subtraction problem?• What does the number $ . ___ round to?Summative:Students will be tested at the end of the unit through a test provided by the school.