Original 13) Missing Number Equations
Bonds of 5: Fill a Row
This board was replaced by a set of 3 boards in the 2023 edition
Mathematics
Develop fluency using two-part bonds of 5 in related addition or subtraction equation where the unknown is a missing part.
Please Note: The core activity board is used for multiple activities at different levels. Please read the ‘a little easier’ activities before giving this activity board to your students. Most students need to start with the ‘a little easier activities’ and complete them over several weeks.
Language
- addition as ‘add’. Read aloud as “(Part) add (part) equals 5”.
- subtraction as ‘subtract’. Read aloud as “(Whole) subtract (part) equals (part)”.
- equals
- subtraction solved using adding on. For example, 5 – ? = 3 can be thought of as “What part joins (adds on) to 3 to make the whole of 5?”
Please, click this link to read Teacher Notes for information about “Solving Missing Number Equations” using part-part-whole.
Differentiation
A little easier
Skill Focus: addition
Play using the first column on each player’s game board. The first player to place 3 counters consecutively (without empty cells in between) wins. This is helpful for students who need to focus on repeating the same type of question to develop fluency.
Repeat using the second column of addition. Each column has the missing number in a different position.
Skill Focus: subtraction
Play using the fourth column on each player’s game board. This column of subtraction has the unknown in the typical position. The player who fills the most missing numbers in 3 minutes wins. This is helpful for students who need to focus on repeating the same type of question to develop fluency.
Repeat using the third column on each player’s game board. This column of subtraction has the unknown part in an atypical position.
Working Memory Support: build a wall
- Cover the bottom three rows with a piece of paper.
- Build a two-part bond wall of 5. Use one of each block from 1 to 5. Place this next to each related row on the activity board.
- Use the blocks to solve each missing number in the first row. Write each missing number on the write and wipe sleeve with a dry erase marker.
- Repeat for row 2, then row 3.
- Discuss patterns. For example, each row uses the same two-part bond of 5.
- Predict what missing number equations will be on the forth row. (Note vertical counting patterns.) Write these equations on the sleeve. Then move the covering piece of paper and check.
Essential Information
Playing using the first three rows. Cover the bottom three rows. This is helpful for students who are visually overwhelmed by the number of playing spaces to scan.
Repeat using the bottom three rows. Cover the top three rows.
Progression
In the next activity students apply the skills of representing of Bonds of 5 with Bond Blocks and as addition and subtraction equations to create related number stories using words and pictures. Go to
Activity 14
Bonds of 5: Representing Addition, Thinkboard
Bonds of 5: Representing Subtraction, Thinkboard