##
* *Reflection: Quizzes
Quiz 1 : Assessing addition and subtraction of like denominators - Section 2: Quiz 1: Administering the quiz

The quiz results were really interesting. We had spent little time drawing models in simple addition and subtraction problems because the majority of students showed me they could do that on a pretest. Somehow, in this quiz several students reverted to using two bars that would show comparison as if they were comparing equivalent fractions. Hmmm? It is interesting to see how that happens and I know when I talk about it with them they will say "Oh yah!" But for me, it says that the concept is not strong enough. In this short video clip, I show two examples and quickly talk about what I am seeing.

*Trouble with the same whole!*

*Quizzes: Trouble with the same whole!*

# Quiz 1 : Assessing addition and subtraction of like denominators

Lesson 5 of 8

## Objective: SWBAT add and subtract fractions with like denominators.

#### Timed Tests

*10 min*

My students need constant reinforcement in math fact fluency. Subtraction is still a weak area for my students. They can rattle off their multiplication facts, but when I ask what 11-5 is, they stumble. So again today, we logged onto our iPad ap Timed Test and set it up for two subtraction tests. Because subtraction is such a stumbling block mentally, I roved the class as they were working helping them with thinking strategies. I told them to think of 15-6 as "What plus six is 15?" I have noticed that using this inverse technique helps them think more quickly. Their scores were a little better today. They can log into their score record page and see how they are doing from test to test. One student exclaimed that she gained 20 points just thinking about addition! We are going to keep at this!

*expand content*

Quiz 1 Adding & Subtracting Fractions with Like Denominators

I created this very straightforward and simple quiz as a warm up for the second quiz. The second quiz will be tomorrow, and will include mixed numbers and decomposition. The quiz has examples of straightforward addition and subtraction problems with two word problems that refer to the same whole. The first problems are skill warm ups.

I passed the quiz out and we went over directions, understanding that the word problems needed to be proven by drawing a fractional model.

*expand content*

##### Similar Lessons

###### Modeling with Box Diagrams on the iPad (day 1 of 2)

*Favorites(1)*

*Resources(23)*

Environment: Suburban

###### Fractions and Art - Sol LeWitt Style

*Favorites(2)*

*Resources(5)*

Environment: Suburban

###### Measuring & Comparing the Lengths of Objects

*Favorites(4)*

*Resources(37)*

Environment: Urban

- UNIT 1: Place Value and Multi-Digit Addition & Subtraction
- UNIT 2: Metric Measurement
- UNIT 3: Graphing and Data
- UNIT 4: Concepts of Multiplication
- UNIT 5: Geometry
- UNIT 6: Fractions 1: Understanding Equivalence in Fractions and Decimals
- UNIT 7: Fractions 2: Addition and Subtraction Concepts/ Mini unit
- UNIT 8: Fractions 3 Mini Unit: Multiplying Fractions by Whole Numbers
- UNIT 9: Division Unit
- UNIT 10: Addition and Subtraction: Algorithms to One Million
- UNIT 11: Place Value
- UNIT 12: Addition and Subtraction Word Problems
- UNIT 13: Multiplication Unit

- LESSON 1: Understanding Composing and Decomposing: Day 1
- LESSON 2: Using Decomposition As a Tool to Prove The Why Behind Simplifying
- LESSON 3: Applying Strategies to Word Problems and Fractions
- LESSON 4: Snicky Snacks & Fractions: Using Our Skills to Make a Treat.
- LESSON 5: Quiz 1 : Assessing addition and subtraction of like denominators
- LESSON 6: Quiz 2: Assessing Decomposition & Mixed Number Problems
- LESSON 7: RTI Decomposing: Dice, Drawing and Explicit Instruction
- LESSON 8: Unit Assessment of Addition and Subtraction of Fractions With Like Denominators