720 likes | 2.36k Views
Multiplication:. It can be fun!!. Rose Horan & Brandy Woodtke. Table of Contents…. What is Multiplication? Explanation of Repetitive Addition (with examples) Multiplication Table and Usage Bingo Activity Examples NTCM Standards Assessments References. What is Multiplication?.
E N D
Multiplication: It can be fun!! Rose Horan & Brandy Woodtke
Table of Contents… What is Multiplication? Explanation of Repetitive Addition (with examples) Multiplication Table and Usage Bingo Activity Examples NTCM Standards Assessments References
What is Multiplication? • Multiplication is just repeated addition! • It is a fast way of adding a series of numbers. • Examples: 2 x 4 = 8 • Look: 2 + 2 + 2 +2 = 8 • 3 x 3 = 9 • Look: 3 + 3 + 3 = 9
What is multiplication cont. • When you multiply numbers, you multiply the factors. The answer you get is called the product. • 4 x 1 = 4 factor product factor
Word Problem examples: • Multiplication can be used to solve all types of every day problems. For example: • You make $2.00 an hour. You work 3 hours a week. How much money do you make a week? • $2.00 X 3 hours = $6.00 • You make $6.00 per week. • Multiplication is repeated addition: • 2.00 + 2.00 + 2.00 = $6.00
Word problems Cont. • You are making a batch of cookies. The original recipe calls for 1 egg. But you need to triple the recipe. How many eggs do you need? • 1 egg X 3 recipes = 3 eggs • See, multiplication is repeated addition! • 1 egg + 1 egg + 1 egg = 3 eggs
Examples… There are 2 students with 2 apples each. The teacher has no apples. These students give their apples to the teacher. How many apples does the teacher have now?
Student 1 + + Student 2 = ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ = Teacher
Multiplication Table: • Multiplication tables help students to remember their multiplication facts. • The horizontal (rows) and vertical (columns) bolded numbers are the factors. The other numbers are the products.
Correct Usage of the Multiplication Table: • To use the Multiplication Table you need to multiply a row times a column. • 6 (row) X 6 (column) = 36
To Play Bingo… Click on the answer to the equation above the Bingo Card. If an incorrect answer is given, you will have the chance to guess again. When a row is filled, you win! Good Luck!!
4 * 1 = ? 5 1 7 3 2 9 8 6 4
3 * 2 = ? 5 1 7 3 2 9 4 8 6
3 * 3 = ? 5 1 7 3 2 9 6 4 8
2 * 4 = ? 5 1 7 9 3 2 6 4 8
Assessment: • The final assessment of the lesson will be based on the child’s overall understanding of the multiplication facts. • After the computer lesson the children go to: http://www.kidzone.ws/math/spring/t_math.asp?mult-visual.asp and print the page. Complete the exercise and hand it in.
NCTM Standard • Grade: 3rd • Topic: Introductory lesson on multiplication • Standards: • understand various meanings of multiplication and division • understand the effects of multiplying and dividing whole numbers • identify and use relationships between operations, such as division as the inverse of multiplication, to solve problems • understand and use properties of operations, such as the distributivity of multiplication over addition. Source: http://standards.nctm.org/document/chapter5/numb.htm
References: • http://www2.asd.wednet.edu/Pioneer/barnard/resources/clart/images/school/math%20fun.gif • http://images.google.com/imgres?imgurl=http://www2.asd.wednet.edu/Pioneer/barnard/resources/clart/images/school/math%2520fun.gif&imgrefurl=http://www2.asd.wednet.edu/Pioneer/barnard/resources/clart/kidsca.htm&h=150&w=137&sz=6&tbnid=LCRe6DmI9IQJ:&tbnh=90&tbnw= • http://images.google.com/imgres?imgurl=http://www2.asd.wednet.edu/Pioneer/barnard/resources/clart/images/school/math%2520fun.gif&imgrefurl=http://www2.asd.wednet.edu/Pioneer/barnard/resources/clart/kidsca.htm&h=150&w=137&sz=6&tbnid=LCRe6DmI9IQJ:&tbnh=90&tbnw=82&hl=en&start=53&prev=/images%3Fq%3D%2Bmath%2Bclip%2Bart%26start%3D40%26svnum%3D10%26hl%3Den%26lr%3D%26sa%3DN • http://images.google.com/imgres?imgurl=http://www.feebleminds-gifs.com/smile.gif&imgrefurl=http://www.feebleminds-gifs.com/kids1.html&h=200&w=200&sz=37&tbnid=6-JROpIfEtgJ:&tbnh=99&tbnw=99&hl=en&start=2&prev=/images%3Fq%3Danimated%2Bsmiley%2Bclip%2Bart%26svnum%3D10%26hl%3Den%26lr%3D • http://images.google.com/imgres?imgurl=http://www.feebleminds-gifs.com/smile.gif&imgrefurl=http://www.feebleminds-gifs.com/kids1.html&h=200&w=200&sz=37&tbnid=6-JROpIfEtgJ:&tbnh=99&tbnw=99&hl=en&start=2&prev=/images%3Fq%3Danimated%2Bsmiley%2Bclip%2Bart%26svnum%3D10%26hl%3Den%26lr%3D • http://images.google.com/imgres?imgurl=http://www.feebleminds-gifs.com/smile.gif&imgrefurl=http://www.feebleminds-gifs.com/kids1.html&h=200&w=200&sz=37&tbnid=6-JROpIfEtgJ:&tbnh=99&tbnw=99&hl=en&start=2&prev=/images%3Fq%3Danimated%2Bsmiley%2Bclip%2Bart%26svnum%3D10%26hl%3Den%26lr%3D • http://images.google.com/imgres?imgurl=http://www.feebleminds-gifs.com/smile.gif&imgrefurl=http://www.feebleminds-gifs.com/kids1.html&h=200&w=200&sz=37&tbnid=6-JROpIfEtgJ:&tbnh=99&tbnw=99&hl=en&start=2&prev=/images%3Fq%3Danimated%2Bsmiley%2Bclip%2Bart%26svnum%3D10%26hl%3Den%26lr%3D • http://images.google.com/imgres?imgurl=http://www.feebleminds-gifs.com/smile.gif&imgrefurl=http://www.feebleminds-gifs.com/kids1.html&h=200&w=200&sz=37&tbnid=6-JROpIfEtgJ:&tbnh=99&tbnw=99&hl=en&start=2&prev=/images%3Fq%3Danimated%2Bsmiley%2Bclip%2Bart%26svnum%3D10%26hl%3Den%26lr%3D • http://www.edhelper.com/math/multiplication_tg102.htm • http://standards.nctm.org/document/chapter5/numb.htm • http://www.kidzone.ws/math/spring/t_math.asp?mult-visual.asp