math in the elementary classroom
TRANSCRIPT
![Page 1: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/1.jpg)
+
Math in the Elementary
Classroom
By: Jessica Theis
Picture: http://www.dcptsa.com/math-
superstars/&docid=7vFr4rhi6u7WnM&w=600&h=544&ei=oHuTTu7uMueesQLr5L29Bg&zoom=1&iact=rc&dur=301&page=1&tbnh=115&tb
nw=106&start=0&ndsp=17&ved=1t:429,r:13,s:0&tx=41&ty=62
![Page 2: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/2.jpg)
+Main Operations of Math
Addition
Subtraction
Multiplication
Division
Picture: http://www.martincwiner.com/helpful-math-typesetting-tool-prime-twin-counting-function-example/&docid=WC14HzDEBHQVgM&w=471&h=319&ei=oHuTTu7uMueesQLr5L29Bg&zoom=1&iact=rc&dur=354&page=1&tbnh=104&tbnw=154&start=0&ndsp=17&ved=1t:429,r:10,s:0&tx=86&ty=55
![Page 3: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/3.jpg)
+Addition
Numbers or quantities are combined to form a new number or quantity
Sign indicating addition looks like this: +
Words indicating addition: sum, total, plus, increase, gain, more
Reference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-8823,articleId-8818.html
Picture: http://bookbuilder.cast.org/view_print.php%3Fbook%3D20882&docid=3-mE-ncQyLrluM&w=491&h=490&ei=I32TTp6IHvKKsALSxpi-Bg&zoom=1&iact=hc&vpx=267&vpy=205&dur=66&hovh=224&hovw=225&tx=121&ty=119&sqi=2&page=5&tbnh=118&tbnw=118&ndsp=18&ved=1t:429,r:7,s:81
![Page 4: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/4.jpg)
+Basic Rules of Addition
a+b=b+a
2+3=3+2
a+0=a
8+0=8
2+1=3
+1=the number following it
7+2=9
+2=skip counting going up
Reference: http://www.teach-nology.com/forum/showthread.php?t=2951
Picture:
http://alexisglobaloria1022.blogspot.com/&docid=8wuJYm9cTZ5ZqM&w=300&h=300&ei=In2TTvC8IJOFsAKPxPHXBg
&zoom=1&iact=rc&dur=283&sqi=2&page=1&tbnh=110&tbnw=136&start=0&ndsp=21&ved=1t:429,r:10,s:0&tx=50&ty=6
8
![Page 5: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/5.jpg)
+Examples of Addition
Examples:
2+1=3
9+0=9
6+2=8
![Page 6: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/6.jpg)
+Subtraction
A number or quantity is taken away from the group
Sign indicating subtraction: -
Words indicating subtraction:
difference, minus, decrease, loss, less, fewer, take away
Reference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-
8823,articleId-8818.html
Picture: http://www.dailyclipart.net/clipart/category/math-clip-
art/&docid=m30XOhvYUErG1M&w=340&h=250&ei=U36TTtCTEK-lsQLYxcS-
Bg&zoom=1&iact=rc&dur=381&sqi=2&page=3&tbnh=104&tbnw=142&ndsp=18&ved=1t:429,r:10,s:35&tx=103&ty=43
![Page 7: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/7.jpg)
+Basic Rules of Subtraction
a-0=a
a-a=0
6-1=5
-1=the number preceding it
7-2=5
-2=skip counting going down
Picture: http://www.ehow.com/about_5448285_rules-subtracting-negative-number-
line.html&docid=LLSIzua1xiSF6M&w=225&h=220&ei=eX-TTuTID-
TgsQKozPjEBg&zoom=1&iact=rc&dur=534&page=1&tbnh=124&tbnw=180&start=0&ndsp=16&ved=1t:429,r:2,s:0&tx=8
5&ty=62
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+Examples of Subtraction
Examples:
6-3=?
10-0=?
5-2=?
![Page 9: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/9.jpg)
+Multiplication
Describes scaling one number or quantity by another number
or quantity
Sign indicating multiplication: x or *
Words indicating multiplication: multiply, product, times
Reference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-
8823,articleId-8818.html
Picture: http://www.ehow.com/info_7978422_grade-5-multiplication-games.html&docid=ZlfFVY1tUYJ-
7M&w=225&h=220&ei=pn-
TToOZPMbLsQKVkNCsBg&zoom=1&iact=hc&vpx=775&vpy=310&dur=1912&hovh=176&hovw=180&tx=92&ty=88&sqi
=2&page=7&tbnh=114&tbnw=116&ndsp=18&ved=1t:429,r:11,s:106
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+Basic Rules of Multiplication
a x b = b x a
a x 10=a0
a*1=a
*2=double the number
x 5=counting by 5’s
*9=hand trick
Reference: http://www.dadsworksheets.com/v1/Strategies/eight_rules_of_multiplication.html
Picture: http://www.study-skills-for-all-ages.com/image-files/multiplication_flashcard_color.gif
![Page 11: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/11.jpg)
+Examples of Multiplication:
7*1=7
4 x 2=8
1*10=10
![Page 12: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/12.jpg)
+Division
A number or quantity is broken into a certain number of groups creating a new number
Sign indicating division looks like this: / or ÷
Words indication division: quotient, divide
Reference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-8823,articleId-8818.html
Picture: http://www.coolmath4kids.com/long-division/long-division-lesson-3.html&docid=JpY5JBuTRcpA6M&w=345&h=286&ei=W4STTqicMeWMsAK73NigBg&zoom=1&iact=hc&vpx=211&vpy=168&dur=4157&hovh=204&hovw=247&tx=128&ty=90&page=1&tbnh=110&tbnw=133&start=0&ndsp=18&ved=1t:429,r:1,s:0
![Page 13: Math in the Elementary Classroom](https://reader036.vdocuments.site/reader036/viewer/2022082812/55a609911a28ab26638b4668/html5/thumbnails/13.jpg)
+Basic Rules of Division
0/a=0
a÷1=a
Divisible by 2: last digit ends in 0,2,4,6,or 8
Divisible by 3: sum of digits are divisible by 3
Divisible by 4: last 2 digits are divisible by 4
Divisible by 5: last digit is 0 or 5
Reference: http://www.basic-mathematics.com/divisibility-rules.html
Picture:
http://innerknockings.blogspot.com/2010/03/division.html&docid=4kJJ_vVjONVnCM&w=300&h=300&ei=W4STTqicMe
WMsAK73NigBg&zoom=1&iact=hc&vpx=86&vpy=226&dur=565&hovh=225&hovw=225&tx=129&ty=127&page=3&tbnh
=116&tbnw=116&start=36&ndsp=17&ved=1t:429,r:0,s:36
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+Basic Rules of Division Part 2
Divisible by 6: has to be divisible by 2 AND 3
Divisible by 7: Take away last digit and double it and subract it from remaining digits. If that number is divisble by 7, the the original number is divisible by 7.
Divisible by 8: last three digits are divisible by 8
Divisible by 9: sum of digits is divisible by 9
Divisible by 10: last digit is 0
References http://www.basic-mathematics.com/divisibility-rules.html
Picture: http://www.superstock.com/stock-photos-images/1538R-2017&docid=u7H96Q77c2A6wM&w=323&h=350&ei=vouTTqWjOIKIsQLP2vDKBg&zoom=1&iact=hc&vpx=240&vpy=113&dur=350&hovh=234&hovw=216&tx=113&ty=104&page=1&tbnh=134&tbnw=124&start=0&ndsp=17&ved=1t:429,r:12,s:0
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+Examples of Division
Examples:
6/3=2
4÷1=4
0/7=0