3rd Grade NBT Journey
The importance of NBT
My journey from the beginning
Those highlighted in blue are the students I am working with.
The areas highlighted in yellow will be our focus for intervention.
Base-10 Bag Addition (different versions to meet the needs of students)
Add or Subtract 10s (used to help introduce the next activity)
Addition Tasks with Screened Materials from Teaching Number In The Classroom (p. 172-173)
Addition problems (using mental math)
Easy to differentiate for the needs of your students:
Play with a partner or as an individual
Roll a dice to generate your two numbers
Use different dice to differentiate for students
Give them the first number to have (some) control of the numbers added together
QUESTIONS AND PROMPTS
What do you know about the digits in (56)?
How can you show this number in another way?
Is 3 tens and 5 ones the same as 5 ones and 3 tens?
Is 300 + 50 + 6 the same as 356?
What does it mean to mentally add two numbers together?
What are you doing to solve your problem?
How do base-10 manipulatives help you?
Explain your thinking.
Does anyone have a different way to solve?
Can you explain your thinking to another student so they understand what you are doing?
What was different about adding 3-digit numbers instead of 2-digit numbers?
Jacob: 65% (J) 94% (M)
Aayla: 71% (J) 100% (M)
Kaylynn: 59%(J) 100% (M)
Myah: 76% (J) 94% (M)
Karlie: 24% (J) 94% (M)
After looking at the new interview results, I see that we still need work in renaming numbers. (especially tens to hundreds)