ECED 3300 Chapters 2 & 3 Problem-Based Task 
(In-Class Activity)
 dog park
When Zoe and Caitlin went to the dog park, they counted 12 dogs playing and having fun.  Zoe noticed 2 dogs left the park because they were thirsty.  Then Caitlin saw 3 dogs leave the park because their owners needed to go home. When Zoe and Caitlin left the dog park, they counted all of the dogs that were still playing in the park.  How many dogs did Zoe and Caitlin count that were left in the park?

With a friend, show three ways you solved Zoe and Caitlin's problem.  Share your solutions with the class.