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Math in Focus Parent Night Bar Models

Math in Focus Parent Night Bar Models. February 27, 2014 6:00-7:15. Agenda Videos Three Types of Bar Models Steps to Solving Bar Model Problems Sample Bar Model Problems On-line resource - Think Central Practice. Interlocking Concepts and Skills. Clear Visuals and Use of Models.

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Math in Focus Parent Night Bar Models

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  1. Math in Focus Parent NightBar Models February 27, 2014 6:00-7:15

  2. Agenda • Videos • Three Types of Bar Models • Steps to Solving Bar Model Problems • Sample Bar Model Problems • On-line resource - Think Central • Practice

  3. Interlocking Concepts and Skills

  4. Clear Visuals and Use of Models

  5. What are bar models and why are they so important? • Bar Models provide a useful pictorial representation of sets and parts making up a whole • Children use bar models to illustrate a problem, indicating the known and unknown parts or the whole • Bar Models help students make sense of the relationship between values given in real-world problems

  6. Parent Videos on Bar Models • 2nd/3rd Grade Word Problems • 4th/5th Grade Multiplication and Division with Bar Models

  7. Bar Models: 3 Major Types PartPart Part/Part/Whole Comparison Equal Parts

  8. Steps to Solve Word Problems using Bar Models Step 1 – Read the problem without numbers. Mrs. Smith has ___apples. Later she gets ___more apples. How many apples does she have in all? Step 2 – Read the problem with numbers. Mrs. Smith has 3 apples. Later she gets two more apples. How many apples does she have in all?

  9. Steps to Solve Word Problems using Bar Models Step 3 – Decide which bar model to use. This is problem tells me 2 parts and asks me to find the whole, so I need to use a Part/Part/Whole bar model. Step 4- Decide where the ? goes. ?

  10. Steps to Solve Word Problems using Bar Models Step 5 – Plug in the numbers. Step 6 – Solve it 3 + 2 = 5 3 2 ?

  11. Steps to Solve Word Problems using Bar Models Step 7 – Report your answer in a sentence. Mrs. Smith had 5 apples in all. Step 8 - Check your work. 5 - 2 = 3 or 5 – 3 = 2

  12. What type of Bar Model is this? Bar Modeling Grade 2

  13. In Mrs. Anderson’s class there are twice as many boys as girls. (2nd Grade) Which Bar Model is this? Girls Boys There are 18 boys. How many girls are there? There are 6 girls. How many boys are there?

  14. 3rd Grade ProblemWhat type of Bar Model is this? 3 ? Write a number sentence to match your picture.

  15. Some problems will ask students to do 2 parts or more. • Students have to determine which part to solve first. • Figuring out 2nd, 3rd or 4th parts to the problem are determined by whether or not they get the 1st step done correctly. • Bar models can show them what they don’t know.

  16. Joe is traveling to New York and can take two suitcases. His 1st suitcase can hold 22 lbs of luggage and his 2nd suitcase can hold 17 pounds more than his 1st suitcase. If the weight limit is 60 lbs can Joe take both suitcases? (3rd Grade Problem) 22 lbs 17 lbs Suitcase 1 ? Suitcase 2 ?

  17. Some problems combine comparison bar models with equal parts bar models. (4th Grade) Lisa had 175 stamps. Mia had 129 stamps. Lisa gave some to Mia and now Mia has 3 times as many. How many does Lisa have now?

  18. Lisa had 175 stamps. Mia had 129 stamps. Lisa gave some to Mia and now Mia has 3 times as many. How many does Lisa have now? What if I used a bar model to help see the problems? ? Lisa ? Mia

  19. Lisa had 175 stamps. Mia had 129 stamps. Lisa gave some to Mia and now Mia has 3 times as many. How many does Lisa have now? What if I used a bar model to help see the problems? ? Part 1) 175+129=304 Part 2) 304 4 = Lisa had __ stamps now. Lisa ? Mia

  20. 5th grade problem The cost of 3 pair of socks and 4 T-shirts is $132 Each T-shirt costs twice as much as a pair of socks. What is the cost for 1 pair of socks? What is the cost for 1 T-shirt?

  21. Use a comparison and equal parts bar model. The cost of 3 pair of socks and 4 T-shirts is $132 Each T-shirt costs twice as much as a pair of socks. What is the cost for 1 pair of socks? What is the cost for 1 T-shirt? ? Socks ? $132 T-Shirts

  22. Use a comparison and equal parts bar model. Each bar represents 1 piece to the problem. To find the solution Divide the total by the number of bars. 132 divided by 11 equals 12. So the cost of 1 pair of socks is $12 and the cost of 1 T-shirt is $24. ? Socks ? $132 T-Shirts

  23. Think Central • www.thinkcentral.com • Teachers can post assignments and test scores • Students can access • Student book • Student workbook • Virtual manipulatives • Student interactivities • Lesson videos

  24. Technology: ThinkCentral.com

  25. Math Background and Support Videos(ThinkCentral) • Videos with a description of each chapter’s content • Parent Support Videos with ‘at home’ suggestions

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