### Kinder/Chapter 5: Addition

Online Resources:

- EngageNY Math Studio Talk: K.OA and K.NBT
- K-5 Math Teaching Resources

Thoughts on Lessons:

- Tools: 2-colored counters, Unifix Cubes, ten-frames
- Strategies: Count all and count on
- Lesson 5.1/5.3: This is a time for stories and using mathematics to discuss real-life actions (Mathematical Practice #4). This first lesson focuses on “add to” result unknown problem situations which involve actions.
- Lesson 5.2: Similar to the previous lesson students are combining amounts. However, this lesson does not involve movement. Put together situations just describe what is already present. It is vital in both lesson 5.1 and 5.2 that you emphasis what the symbols mean. Use “and” to show a joining and write the word “equals” or “is”. Alway put the equations in a context or have the students to that. Make a point to write equations in both ways 2 + 3 = 5 and 5 = 2 + 3 or 2 and 3 equals 5 or 5 equals 2 and 3.
- Lesson 5.3: Combine ideas with lesson 5.1 or build into a routine.
- Lesson 5.4 – 5.7: These should be centers that students explore over a series of days. You can have baggies set up where the colors represent the addends and students have to create or match the equations. They should explain why they wrote or chose specific equations.
- Lesson 5.8 – 5.12: For these series of lesson the focus should be on seeing and articulating patterns with sequencing the equations. These patterns should be charted with visuals. Students will need to have multiple exposures to these activities to make sense of them. You are also introducing the idea of 2 addends and different ways to show amounts. This is also an opportunity to extend ideas and have student figure out missing addends when working with in 5. This is also an opportunity to focus on “both addends unknown” problem situations.

### Kinder/Chapter 6: Subtraction

Online Resources:

- EngageNY Math Studio Talk: K.OA and K.NBT
- K-5 Math Teaching Resources

Thoughts on Lessons:

- Tools: 2-colored counters, Unifix Cubes, ten-frames
- Strategies: Take from, count back
- Lesson 6.1/6.3: This is a time for stories and using mathematics to discuss real-life actions (Mathematical Practice #4). This first lesson focuses on “take from” result unknown problem situations which involve actions. Could create a center where students take away a specific color and describe what they did. For example, you could have a stack of 6 Unifix cubes and 4 are red. Red is the take away color. So the child would say, “We had 6. We took away 4. Now we have 2.”
- Lesson 6.2: Turn the Advanced Learners into the activity for the lesson and mode how to read and write equations to show students the actions taking place.
- Lesson 6.3: Combine ideas with lesson 6.1 or build into a routine.
- Lesson 6.4 – 6.6: These lesson provide opportunities for students to model using concrete objects and pictures different subtraction stories. Students must have the opportunity to explain their thinking.
- Lesson 6.7: Once this lesson in implemented, then build it as a routine. Alway allow students to place in a context or give a context.