Aim: How can we use a chip model to represent addition and subtraction?
Homework: Txtbk p.18-19 Problem 1.4 A-D
Do Now: The temperature at your home in the Bronx is 60 degrees F. You take a trip to the North Pole where it is -50 degrees F. How many degrees was the temperature change? (use a number line and number sentence to model this problem and solve)
Classwork: We used black (positive) and red (negative) chips to model integer addition problems. We also discussed Black Friday and where it got its name from. We discussed the concept of zero pairs and how a pair of positive and negative chips cancel each other out (the have a total value of zero).
Announcements: There will be a quiz Wednesday 9/20/17! Topics will include: comparing positive and negative numbers, ordering rational numbers (including positive and negative fractions/decimals), temperature problems, number line applications, and chip models.