Using this manipulative you may:
Find common denominators
The number of parts that the object is divided into is the denominator. When there are no black lines in the middle of the object (only yellow lines), the new denominator divides the original fraction with no remainder.
For example, with 2/3 and 3/5 you might separate the 2/3 and 3/5 objects into 15 parts. 15 is the common denominator.
Rename fractions with common denominators
For example, if the original fractions are 2/3 and 3/5 you could substitute 2/3 with 10/15 and 3/5 with 9/15.
If you are correct, a number line will be displayed. If you are incorrect, a message will be displayed telling you where you made an error.
Locate equivalent fractions on a number line
After you identify equivalent fractions, a number line will appear.
Using the example given above, you would click on the number line at 10/15 and 9/15.
If you are correct, a dot will be displayed on the number line where you clicked. If you are incorrect, you will get a hint.
Investigate In-between Fractions
When you have identified equivalent fractions on the number line, you are asked to enter a fraction that is between the two fractions you marked.