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Today, we will count by twos, fives, and tens to 100.

Learning Objective Name _________________________ Today, we will count by twos, fives, and tens to 100. CFU What are we going to do today? What are we going to count by today?

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Today, we will count by twos, fives, and tens to 100.

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  1. Learning Objective Name _________________________ Today, we will count by twos, fives, and tens to 100. CFU What are we going to do today? What are we going to count by today? Activate (or Provide) Prior Knowledge Write in the numbers that come next in the pattern: 1, 2, 3, 4, __, __, __, __ CFU Students, you already know how to count by ones. Today, we will count by twos, fives, and tens to 100. Today, we will count by twos, fives, and tens to 100. We are going to count by twos, fives, and tens to 100. 5 6 7 8 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  2. Concept Development • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • To count by twos, fives, and tens can also be called skip-counting because you are skipping over some numbers. • Examples: • Count by twos*: *Each time, we count on by adding two. Count by twos: 2, 4, 6, 8, 10 Count by fives**: **Each time, we count on by adding five. Count by fives: 5,10, 15, 20 Count by tens***: ***Each time, we count on by adding ten. Count by tens: 10, 20,30 CFU What does count mean? When we count by twos, what does that mean? …fives? ….tens? Which numbers are counting by 2? By 5? By 10? How do you know? a. 2, 4, 6, 8 b. 5, 10, 15, 20 To count is to say numbers in order. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  3. Skill Development and Guided Practice • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. 1something that repeats Count by twos. 2, 4, ___, ___, ___, ___, 2, 4, ___, ___, ___, ___ 4, 6, ___, ___, ___, ___ 6, 8, ___, ___, ___, ___ 8, 10, ___, ___, ___, ___ 10, 12, ___, ___, ___, ___ 8 12 6 10 12 6 10 8 2. 1. 3. 8 14 14 10 12 16 4. 10 12 5. 6. 14 16 20 18 18 12 16 14 Count by fives. 7. 0, 5, ___, ___, ___, ___ 5, 10, ___, ___, ___, ___ 10, 15, ___, ___, ___, ___ 20, 25, ___, ___, ___, ___ 10 15 20 25 8. 15 20 30 25 9. 20 25 30 35 10. 35 30 40 45 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  4. Skill Development and Guided Practice (continued) • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by tens. 0, 10, ___, ___, ___, ___, ___ 20, 30, ___, ___, ___, ___, ___ 30, 40, ___, ___, ___, ___, ___ 40, 50, ___, ___, ___, ___, ___ 50 30 20 40 60 11. 12. 40 80 60 70 50 13. 70 60 80 50 90 14. 90 70 80 100 60 CFU How did I know which number comes after ____? You knew which number comes after ____ because ___. How did you know which number comes after ____? I knew which number comes after ____ because ___. Do Step #2 and show. Do Step #3. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  5. Importance It is important to be able to count by twos, fives, and tens to 100 so that you can: 1. Counting by twos, fives, and tens will help you count many things quickly. 2. Counting by twos, fives, and tens will help you learn to multiply. CFU Does anyone else have another reason why it is important to be able to count by twos, fives, and tens to 100? (pair-share) Why is it important to be able to count to twos, fives, and tens to 100? Which importance means more to you? Why? 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  6. 1. 0, 2, ___, ___, ___, ___, ___, ___, ___, ___, ___ 6 16 18 20 4 8 10 12 14 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  7. Independent PracticeName: ____________________ • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by twos. 0, 2, ___, ___, ___, ___ 2, 4, ___, ___, ___, ___ 4, 6, ___, ___, ___, ___ 6, 8, ___, ___, ___, ___ 1. 4 6 8 10 2. 6 8 10 12 4. 8 10 12 14 10 12 14 16 3. Count by fives. 0, 5, ___, ___, ___, ___ 5, 10, ___, ___, ___, ___ 10, 15, ___, ___, ___, ___ 15, 20, ___, ___, ___, ___ 5. 10 15 20 25 15 20 25 30 6. 7. 20 25 30 35 25 30 35 40 8. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  8. Independent Practice (continued) • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by tens. 0, 10, ___, ___, ___, ___, ___ 20, 30, ___, ___, ___, ___, ___ 30, 40, ___, ___, ___, ___, ___ 40, 50, ___, ___, ___, ___, ___ 9. 20 30 40 50 60 10. 40 50 60 70 80 11. 50 60 70 80 90 12. 60 70 80 90 100 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  9. Periodic Review 1Name: ____________________ • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by twos. 0, 2, ___, ___, ___, ___, ___, ___ 4, 6, ___, ___, ___, ___, ___, ___ 8, 10, ___, ___, ___, ___, ___ 4 6 8 10 12 14 1. 8 10 12 14 16 18 2. 12 14 16 18 20 3. Count by fives. 0, 5, ___, ___, ___, ___, ___, ___, ___ 10, 15, ___, ___, ___, ___, ___, ___, ___ 10 15 20 25 30 35 40 4. 20 25 30 35 40 45 50 5. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  10. Periodic Review 1 (continued) • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by tens. 0, 10, ___, ___, ___, ___, ___, ___ 20, 30, ___, ___, ___, ___, ___, ___ 30, 40, ___, ___, ___, ___, ___, ___ 6. 20 30 40 50 60 70 40 50 60 70 80 90 7. 50 60 70 80 90 100 8. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  11. Periodic Review 2Name: ____________________ • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by twos. 0, 2 , ___, ___, ___, ___, ___, ___ 10,12 , ___, ___, ___, ___, ___, ___ 16, 18 , ___, ___, ___, ___, ___, ___ 4 6 8 10 12 14 1. 2. 14 16 18 20 22 24 20 22 24 26 28 30 3. Count by fives. 0, 5, ___, ___, ___, ___ ___, ___, ___ 10, 15, ___, ___, ___, ___, ___, ___, ___ 4. 10 15 20 25 30 35 40 20 25 30 35 40 45 50 5. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  12. Periodic Review 2 (continued) • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by tens. 0, 10, ___, ___, ___, ___, ___ 20, 30, ___, ___, ___, ___, ___ 30, 40, ___, ___, ___, ___, ___ 20 30 40 50 60 6. 40 50 60 70 80 7. 8. 50 60 70 80 90 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  13. Periodic Review 3Name: ____________________ • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by twos. 2 , 4, ___, ___, ___, ___, ___, ___ 8,12 , ___, ___, ___, ___, ___, ___ 16, 18 , ___, ___, ___, ___, ___, ___ 1. 6 8 10 12 14 16 14 16 18 20 22 24 2. 3. 20 22 24 26 28 30 Count by fives. 5, 10, ___, ___, ___, ___ ___, ___, ___ 15 20, ___, ___, ___, ___, ___, ___, ___ 15 20 25 30 35 40 45 4. 25 30 35 40 45 50 55 5. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  14. Periodic Review 3 (continued) • To count is to say numbers in order. • To count by twos is to count on by adding two each time. • To count by fives is to count on by adding five each time. • To count by tens is to count on by adding ten each time. • Count by twos, fives, and tens to 100. Count by tens. 10, 20, ___, ___, ___, ___, ___, ___ 20, 30, ___, ___, ___, ___, ___, ___ 0, 10, ___, ___, ___, ___, ___, ___ 30 40 50 60 70 80 6. 40 50 60 70 80 90 7. 20 30 40 50 60 70 8. 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  15. Periodic ReviewName: ____________________ _____, _____, _____, _____, _____, _____, _____, _____, _____, _____ 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

  16. Blank Page 1st Grade Number Sense 2.4 Count by twos, fives, and tens to 100. Lessons to be used by EDI-trained teachers only.

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