conceptsstudentsmaywant#to#explore#about#even#and#odd#numbers.## Timeframe:# 1hour# CommonCoreStandard(s):# &2.OA.3Determine#whether#a#group#of#objects#(up#to#20)#has#an#odd#or#even#number#of#members,#e.g.,# by#pairing#objects#or#counting#them#by2s;#writean#equation#to#express#an#even#numberas#a#sum#oftwo# … Distribute one sheet of paper and 15 counters to each student or pair of students. NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to Have students use their green crayons to continue the pattern on the charts up to the number 50. 486 0 obj <>/Filter/FlateDecode/ID[<302F56F2B99E0D4BAD7F00EF14F58667>]/Index[428 90]/Info 427 0 R/Length 230/Prev 469288/Root 429 0 R/Size 518/Type/XRef/W[1 3 1]>>stream Model this process for students, and then have them use counters to find which numbers are odd or even. The rules for that are extremely simple: tr:nth-child(even) {background: #CCC} tr:nth-child(odd) {background: #FFF} Say: Show 3 groups of 5 counters. Multiplying.

Ask students to circle one even number and one odd number between 20 and 50 on thier charts. Students will explain why numbers ending in 1,3,5,7,9 are odd and numbers ending in 0,2,4,6,8 are even. Write several numbers between 50 and 100 on the chalkboard, and ask students to identify whether each is odd or even. Students will identify odd and even numbers and patterns in number sequences. If divided by the number two, always there is a fraction in the result. Feel free to use the counters I placed on your desk. Students will probably skip count by 5 to find the answer, 15. endstream endobj startxref Even and odd rules. Continue through until 9. With the help of certified and current classroom teachers, TeacherVision creates and vets classroom resources that are accurate, timely, and reflect what teachers need to best support their students. The concepts of odd and even numbers are somewhat bewildering to many young children, so having a method to model numbers that clearly shows the difference between odds and evens is crucial. A hundreds chart is used to show the alternating pattern of odd and even numbers, and students are asked to extend the pattern to identify additional odd and even numbers. Ask: What multiplication sentence describes the model? endstream endobj 429 0 obj <>/Metadata 24 0 R/Outlines 41 0 R/PageLayout/OneColumn/Pages 426 0 R/StructTreeRoot 78 0 R/Type/Catalog>> endobj 430 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 431 0 obj <>stream Encourage students to arrange the counters in groups of 10.

The making of two rows highlights the fact that even numbers are always divisible by two. Early Years Foundation Stage; US Kindergarten. 0 FEN Learning is part of Sandbox Networks, a digital learning company that operates education services and products for the 21st century. To support this aim, members of the Base-10 blocks can be used to model the variety of ways a number can be represented, and to model regrouping when adding, subtracting, multiplying, and dividing. 428 0 obj <> endobj and see if there is an odd man out. This choice board is a great way for your students to practice their weekly spelling words. Thus, we find that the factors of 12 are: 3, 4, 2, 6, 1 and 12. h��ϭkBa��}�z�_L-� ~\$˂hZؒ�5��8LC�I���E?�k f��f�1���9������ϣ�ȣh�7Tf?4P��{ü������[:�!�y =5NN���V��6e��a?��#{�o>`� ���_�ȩ?�q�/�Ї�z���Wī0CM��.ta� One way to improve the readability of large tables is to color alternating rows. Further explain that if there is an unpaired counter, or a counter is left over, then the number is odd. The following array, consisting of four columns and three rows, could be used to represent the number sentence 3 x 4 = 12. Select from a monthly, annual, or 2-year membership plan starting at \$2.49/month. Two of the popsicle sticks pair up but we have one stick that is left out (an odd man out).” So three is odd.” Put 3 in the odd column. All rights reserved. Resources •Counters / straws •Hundreds Board •Odd or even - investigation sheet •1-100 cards •Calculator •Individual whiteboards and washable pens •FISH Kit . Show students how to tell whether a number from 1 to 6 is even or odd using counters. An array is formed by arranging a set of objects into rows and columns. When we add (or subtract) odd or even numbers the results are always: Operation Result Example (red is odd, blue is even) Even + Even: Even: 2 + 4 = 6: Even + Odd: Odd: 6 + 3 = 9: Odd + Even: Odd: 5 + 12 = 17: Odd + Odd: Even: 3 + 5 = 8 (The same thing happens when we subtract instead of adding.) Ask: What is the total number of counters?