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Math » Mrs. Bass
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Mrs. Bass
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Welcome to Mrs. Bass' 5th Grade Math Class Check out this cool site for video demonstrations of math strategies: http://www.schultzcenter.org/mathvideos.shtml This week: On Friday, each class took a timed multiplication quiz, and the results were mixed as expected. For a few students, basic multiplication facts are a real strength. For others, they are a real challenge. At any rate, we will continue to push for mastery of these basic facts. The first test will be graded but not entered as a grade. Students had 90 seconds to complete the 42 facts. Those students who scored 90% or better did receive 5 extra credit math points that will apply toward their final math grade. The goal is to achieve 90+% accuracy within a two minute limit. So, please keep reviewing these facts. We will have another test soon, and students will only have two minutes. We are also planning to take our first Math Investigations and Every Day Counts Calendar Math quizzes soon. We may not be able to complete both of these this week due to Benchmark testing, but these quizzes are coming up soon. Students should be familiar with: Number Puzzles--students are given clues and then have to find a number that matches (1. I am an odd number 2. I am greater than 50. 3. I am a square number. 4. I am less than 100.) 81 would fit. Factors- (1,3,9) Multiples- 9, 18, 27, ad infinitum Prime Numbers-exactly 2 factors Composite Numbers-more than 2 factors Number(s) that are not prime or composite- (1) Square numbers- 1 X 1 =1 2 X 2= 4.... Square roots-1 X 1 =1 2 X 2= 4.... Arrays Rules of divisibility Sum of the Digits- SOD 347 = 3 + 4 +7 = 14 Greatest Common Factor - gcf Finding a fraction's lowest terms Subtracting using the traditional algorithm with dollar amounts into the 100,000s and also dollar amounts that include decimals ($20.00- $13.26= ___) Please continue to ask about these EDC components: X-Blitz Cha-Ching Daily Depositor Today We Have Finding LT Split-It Double-Trouble You can find samples in the Math EDC notebook. I would also ask that parents create flash-cards for any basic multiplication facts, 1s through 9s, that are not automatic (if you see fingers moving, the facts are not automatic :-}). Automaticity of basic facts is a skill that is presumed to be mastered before moving to middle school, and it is easy to practice too. Monday: We have the day off. Relax and have fun! Tuesday: We'll continue our normal math programs. We'll continue EDC (Every Day Counts- Calendar Math) and our first investigation, Number Puzzles and Multiple Towers. Wednesday: We'll continue our normal math programs. We'll also continue EDC (Every Day Counts- Calendar Math) and our first investigation, Number Puzzles and Multiple Towers. We may have one of our first "real" quizzes too. Thursday: We'll continue our normal math programs. We'll also continue EDC (Every Day Counts- Calendar Math) and our first investigation, Number Puzzles and Multiple Towers. Friday: We'll continue our normal math programs. We'll also continue EDC (Every Day Counts- Calendar Math) and our first investigation, Number Puzzles and Multiple Towers. Some work to do at home? You can study the 15 basic multiplication facts! This assumes that you know all of your 0s,1s, 2s, 5s, 10s, and squares (like 8X8=64...6X6=36). When you read "know" that means like instantly, kind of like you know how to breathe. So, you can study the facts that are not in the list as well if you need to. So, 15 Facts Coming Right At You: 9x8 9x7 9x6 9x4 9x3 8x7 8x6 8x4 8x3 7x6 7x4 7x3 6x4 6x3 4 x 3 Please also think about ways to look at a "difficult" fact like 8 X 7 in a new way. Perhaps, decomposing 8 X 7 into (8 X 5) + (8 X 2) can make these much easier! Make flash cards. Mix them up. Quiz Granny. Become a multiplying maniac! Please bring a pen, and two sharpened pencils each day!
Calendar Math: will continue on a daily basis with an emphasis on subtraction, patterns, and representations of fractions with denominators of 100. Example, the 8th day of school will be listed as 8%, 0.08, 8:100 and 8/100. We will then list all of the factors of 8 and 100 {8: (1,2,4,8) 100: (1,2,4,5,10,20,25,50,100)}. We will then divide 8/100 by GCF/GCF (GCF=Greatest Common Factor) in order to find the way to express 8/100 in its lowest terms. (8/100 divided by 4/4 = 2/25) The following rubric explains how to correctly answer a word problem. How to Create a Complete Answer to a Word Problem
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Write an estimate (estimates make sure that students are pre-thinking the question!) -
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Write an equation Samples: 714 ¸ 2= n 47 + 52 = n 47 x n = 94
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Solve the problem using as much visual evidence as possible, especially if you are using a traditional “column form” strategy—This might include a chart, number line, graph, picture, or other visual aid
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Rewrite the equation with the answer -
Samples 714 ¸ 2 = 357 47 + 52 =99
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Write the answer in a COMPLETE sentence that restates the question.
Example :
Fran has 67 students, and Leslie has 53 students. Who has the most students and by how much?
Estimate: Fran has 15 more students.
Equation: 67 - 53 = n
Work: 60 7
-50 -3 10 + 4 = 14
Fran has 14 more students than Leslie.
Ask yourself, "Does my answer make sense?"
Some easy concepts to practice in order to make our first unit more fun.
Combinations of ten, 100, 1000 etc.
10 +___= 10
9 +___=10
8 +___=10
7 + ___= 10
6 +___= 10
5 +__=10
4 +___=10
3 + ___= 10
2 +___=10
1 +___=10
60 + ___= 100
300 +____=1,000
Please look at all of the information "related files" and "links" on the main math page. If you wish to contact me, please email me at bassp@duvalschools.org or contact me by phone at 992- 6390 ext. 232
Fifth Grade - Cultivating Excellence!
Duval County
13200 Chets Creek Boulevard
Jacksonville, FL 32224
(904) 992-6390
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