T4
Use an inequality to compare rational numbers NS.7 a, b & d
Lesson 1
In life we say words like "Less than" or "More than" and at some point, some smart math person said, "Let's save some time and replace those words with symbols." And in addition to being able to use these symbols to compare things, now people use them when doing math, writing code, and more.
3.6 oz > weight of a letter (to mail)
spending < income
15 > 2
And we can use what we learned about number lines to prove it!
Dismiss them having them say to each other, "The bigger number is always on the right."
Inequalities are symbols that are use to compare numbers.
Less than uses the symbol <
Greater than uses the symbol >
* When comparing numbers, use a number line to show your thinking and prove your answer
* The number on the right (on a number line) is ALWAYS the bigger number
2. CYUqs → Do in your notebook. You chose where you want to start. Check answers as you’re working. If you make a mistake, fix it. If you need help, get help. If someone else needs help, give help.
For each problem, sketch a horizontal or vertical number line to prove your answer: p369: 15, 16, 17, 18, 19, 23; p367: 1, 2, 3, 4, 5 (Volume 1, Ch5-3)
3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search
Lesson 2
After completing the Check-your-understanding Questions, which were important for everyone to do?
* When comparing rational numbers, remember to use a number line to prove your answer.
* The number on the right (on a number line) is ALWAYS the bigger number
Three ways to compare fractions with different size pieces (denominators):
1. Double number line -- a double number line has two number lines, one above the other, with the same starting and ending numbers but different intervals (spacing)
2. Area models (using rectangles) -- one directly above the other
2. CYUqs → Do in your notebook. You chose where you want to start. Check answers as you’re working. If you make a mistake, fix it. If you need help, get help. If someone else needs help, give help. * Pro tip - DO NOT rotate your paper today
3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search
Lesson 3
Lesson 4
After completing the Check-your-understanding Questions, which were important for everyone to do?