Matching works with small numbers. Bars work with any numbers.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
Both bars start together
Draw both bars from the same line. Then you can see the extra bit.
The extra length on the longer bar is the difference.
Label both bars, or you will forget which is which.
Both bars start at the same line
Otherwise the picture lies. Comparison drawings only work when they share a starting point.
The difference is the sticking-out bit
The extra length past the shorter bar is the answer. Draw it, then label it with a question mark.
Step 2: Try It Yourself
Change the numbers and watch the dashed gap change.
Ana
14
Leo
9
5
14 is 5 more than 9.
Step 3: Watch an Example
One step at a time.
Watch Leo Draw a Comparison
Ana has 14 shells and Leo has 9.
- Step 1
He draws Ana’s bar and labels it 14.
Step 4: Your Turn
Practice makes it stick.
Collecting Shells
Problem 1 of 1
Ana has 16 shells. Leo has 12. How many more does Ana have?
Ana
16
Leo
12
4
Ana
Leo
more
Read the Bars
1 of 3
Bars of 18 and 11. What is the difference?
2 of 3
Bars of 20 and 14. What is the difference?
3 of 3
Bars of 13 and 13. What is the difference?
Step 5: Quick Check
Show what you know.
Question 1 of 2
Bars of 15 and 8. What is the difference?
Question 2 of 2
Why must both bars start at the same line?
What You Learned
- Draw both bars from the same start line.
- The extra length is the difference.
- Label both bars so you know which is which.