Dive into Math 1:  Ways to Subtract			 	

The student will be able to use three different meanings for subtraction: 
- Taking away with a subtraction ring.
- Comparing or matching and counting the left-overs.
- Counting or adding on.

Activity: Different learning tasks can be set up in a math learning center 
for practices for each way.

Taking away : Provide counters and a subtraction ring. (The child can use
modelling clay to draw a ring around the number of objects to be taken away.) 
Provide a worksheet with subtraction equations to accompany these manipulatives.

Comparing: Provide counters (or any objects which may be theme-related eg. 
apples,dinosaurs, penguins etc.)and plastic straws to use any matching lines.  
Provide a worksheet with subtraction equations to accompany these manipulatives.

Adding/Counting on: Provide counters and a container.  Student can drop a 
counter into the container as s/he counts on.  Student will count the counters 
in the container and write the numeral on an accompanying worksheet.

Assessment: Observe the students as they use the manipulatives to assess 
their level of understanding.  Evaluate all worsheets.