# Pins and Numbers: Skip Counting by 2s

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Students will recall, recognise, and create basic patterns verbally and through writing by counting by twos. Students will be able to skip count by twos.

(5 minutes)
• Begin the lesson with an introduction to pairs.
• Explain to students that PairsMeans one set of two things, such as socks, shoes, and gloves. Potential questions include: Have you ever had to count something in pairs? What are some things at home that you have two of that you need together? What are some things that you have seen that are pairs in our classroom?
• Explain that today the class will learn about skip counting by twos using clothespins.
(15 minutes)
• Place students in groups before the activity begins.
• On your chart paper, projector, or interactive whiteboard, display the hundreds grid.
• Explain to students that skipping by twos is the same as counting in pairs.
• Show the hundreds grid to the students. Highlight the twos column in the grid.
• Show students on the interactive whiteboard, projector or poster board the visual pattern that skipping by twos has.
• Explain to your students that the number of times they "skip" from the very beginning of the hundreds chart is called a Factor, or a number that can be multiplied to get a certain Product, or number.
• Show your students that when they skip from 2 to 6, they are skipping 3 times from the beginning of the chart.
• Write out a number sentence to show this: 3 x 2 = 6. Demonstrate this with groups of shapes.
(10 minutes)
• Pair up students with a peer.
• Show the students the Hundreds Grid sheet without any markings.
• Tell the students to take turns skip counting by twos to 100.
• Remind students that skip counting by twos is counting every other number.
• Ask students to skip count by twos by circling the correct numbers with a different colour than the marker that their partner has.
• Students then have to say which ones they circled to their partner.
• Instruct students to say a number, say the equation that is being multiplied, and write the equation on a sentence strip.
(10 minutes)
• Instruct your students to take their sentence strips and match the products to clothespins with numbers on them.
• Have them record their answers on their sheets.
• Once the activity is complete, ask students to place their clothespins in the basket.
• Enrichment:Give your students higher multiplication facts to match together on a separate laundry line.
• Support:Give your students the Hundreds Grid Visual Support sheet to assist in recalling skip counting. Have your students complete the Dot to Dot Zoo worksheet.
(10 minutes)
• Write each student’s name on the checklist in the empty space provided.
• Write down missing numbers within skip counting.
• Place an X in the box if the student could not recall any of the twos facts, or place a check mark if the student was able to recall all of the twos facts without assistance.
(5 minutes)
• Gather the students in a circle around the classroom.
• Have each student choose a random clothespin from the basket.
• Call out equations, such as 2 x 3.
• Have the student with the product pin his clip on the clothesline.
• Repeat this process until every clothespin is on the line.

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