Fractions for 3rd and 4th Graders
Date: 2/13/96 at 11:32:43 From: Bianca Andersen Kurti Subject: Fractions Dr. Math, I need to come up with creative and effective ways to teach fractions to some 3rd and 4th graders. We are going to cover parts of a unit, parts of groups, adding and subtracting, etc. Can you help? Thanks. Bianca Kurti
Date: 9/23/96 at 9:35:21 From: Doctor Jodi Subject: Re: Fractions Hi Bianca! The best thing that I can do is point you to the resources in the Math Forum's Internet Mathematics Library, a searchable list available at: http://mathforum.org/library/ One of the lessons (Mars Fraction Hunt by Paul T. Williams) I found through the Library is replicated below. In particular, you should check out the fractions/decimals/percents section at: http://mathforum.org/library/browse/static/topic/fractions.html An example of a lesson I found there is Fraction City, by Dr. Mavis Kelley: http://www.teachnet.com/lesson/math/matgen.html You can find others at: http://unite.ukans.edu/explorer-db/browse/static/Mathematics/index.html You might also try The Eisenhower National Clearinghouse at: http://enc.org and the Dr. Math archives at: http://mathforum.org/dr.math/ I hope this helps. From: http://www.col-ed.org/cur/math/math19.txt TITLE: MARS FRACTION HUNT AUTHOR: Paul T. Williams, Vanguard Honors Program, Phoenix, AZ GRADE LEVEL: Appropriate for grades 3 - 5. OVERVIEW and PURPOSE: This lesson is designed to give the students practice in the use of fractions, changing fractions, using equivalent fractions, and paying attention to detail. This lesson works well at fourth grade level, but I find it can have good use with advanced third graders. OBJECTIVES: The student will be able to: 1. Divide a word into appropriate fractional parts 2. Use equivalent fractions to correctly divide words 3. Pay attention to details in instructions relating to "first", "last", "second", etc. 4. The student will analyze the clues and decode the message. RESOURCES/MATERIALS NEEDED: A MARS candy bar, classroom globe (on a small stand or cradle), activities paper. Before the activity, the MARS bar should be hidden under the classroom globe. The ANSWER KEY for the activity is: FOR THE FIRST ONE TO FINISH THIS THERE WAITS A PRIZE IF YOU USE YOUR HEAD. CLUE: MARS IS DIRECTLY BENEATH THE SOUTH POLE. GO LOOK. ACTIVITIES: (See "Resources/Materials Needed" for necessary preparation and activities page) The student will write the appropriate parts of the words on the line to form a new word. When the message is complete, the first student to decode the message will be rewarded by finding the hidden candy bar (MARS bar). TYING IT ALL TOGETHER: After the winner has claimed his prize, the assignment should be reviewed. During this exercise, many of the students claim that "no such words exist." This is where it is necessary for them to pay attention to the details of the instructions. Usually the brighter students will be the ones to win; in that case, the teacher could team the students into pairs or small teams - if this is done, it is best to be sure to have a MARS bar available for each winning team member. FRACTION HUNT 1. The first half of food + the last quarter of door. ____________________ 2. The last third of hat + the first 2/5 of heavy. ____________________ 3. The second 1/3 of office + the last 1/4 of door + the first 1/3 of street. ____________________ 4. The last half of go + the last 1/2 of done. ____________________ 5. The last 1/8 of elephant + the first 1/5 of order. ____________________ 6. The first 3/4 of fine + the last 3/4 of dish. ____________________ 7. The last 1/6 of cement + the first 3/7 of history. ____________________ 8. The last half of bath + the first 1/3 of end + the last 2/7 of require. ____________________ 9. The first 2/5 of water + the last 3/4 of fits. ____________________ 10. The last 1/6 of Glenda. ____________________ 1. The first 1/3 of principal + the first half of zero. ____________________ 12. The first 1/7 of instant + the first third of fat. ____________________ 13. The first 2/5 of young + the first 1/10 of understand. ____________________ 14. The first 1/4 ugly + the first 1/5 of settlement. ____________________ 15. The first 1/4 of youthful + the last half of pour. ____________________ 16. The first 1/4 of hesitate + the last 2/3 of sad. ____________________ 17. The first 1/3 of permanent + the first half of iodine. ____________________ 18. The first 2/6 of clover + the last 2/4 of blue. ____________________ 19. The first 1/4 of Mark + the last 3/5 of stars. ____________________ 20. The last 1/4 of Meri + the first 1/5 of Susan. ____________________ 21. The first 3/5 of dirty + the last 3/7 of perfect + the first 2/5 of Lynda. ____________________ 22. The first 3/4 of bent + the last 2/3 of breath. ____________________ 23. The first 1/3 of Thomas + the first 1/8 of Endicott. ____________________ 24. The first 3/5 of sound + the last 2/9 of Aylsworth. ____________________ 25. The first quarter of positive + the first two thirds of Lee. ____________________ 26. The first 4/9 of periscope + the last 2/5 of blood. ____________________ 27. The first third of get + the second fourth of Jody. ____________________ 28. The first half of loud + the last half of book. ____________________ -Doctor Jodi, The Math Forum Check out our web site! http://mathforum.org/dr.math/
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