Embedded Files
The T-Shirt Factory
The T-Shirt Factory
The Context
The Context
What is The
What is The
T-Shirt Factory?
T-Shirt Factory?
2nd Grader's have recently begun a new unit, Grandma Eudora's T-Shirt Factory. Like most of our units, students develop the context through a whole-class read aloud. In the story, Grandma Eudora (a re-occurring character) is opening up a T-Shirt Factory, and needs help organizing her orders of shirts. The shirts can be rolled into tens with loose ones being hung on hangers. The unit introduces the standard place value algorithms for addition and subtraction and deepens their understanding of place value in three and four places.
Developing the H-Chart
Developing the H-Chart
The Open Number Line for Subtraction
The Open Number Line for Subtraction
Breaking News (Again)!
Breaking News (Again)!
We can use SUBTRACTION on our model, The Open Number Line. Here are some of the strategies we've been using in the classroom. We've thought about what strategies are most helpful to use when we think, "What are the numbers telling me to do?"
Counting Up
Counting Up
When the numbers are close together!
Imagine and Adjust
Imagine and Adjust
When a number is close to a landmark! Look for a number that ends with a 9 or 1 and adjust it!
Jump Back by 10s and 1s
Jump Back by 10s and 1s
A trusty strategy we learned with our addition problems, that we can still use with subtraction!
jump back a Landmark
jump back a Landmark
It helps us to jump to a landmark we know and then the rest! A landmark is usually a multiple of 10-- such as 10, 20, 30, 40, etc.
Break It Down into 10's and 1s and Jump to a Landmark!
Forcefield!
Jump the 10s and then the 1s!
Building Math Routines and Habits
Building Math Routines and Habits
Story Problems, Money, and Time
Every day, Second Graders are exposed to numerous explorations of various math concepts. In the beginning of the year, students work to grow their confidence as mathematicians. They will tackle routines such as Problem of the Day, Number of the Day, and working to Collect and Exchange Coins. As we enter October, students will also begin to explore concepts of Time.
Check Out Some Class Charts!
Number of the Day is a chance for students to represent and model numbers in as many ways as they can!
We're learning about money and what coins are worth! Everyday we add $0.01 into our Coin Jar/Piggy Bank.
Double It Up!
One way we can solve Story Problems and Equations is by using what we know about doubles!
Ten is Our Friend!
If we can find ways to make ten, we can solve our problems in a snap!
Growth Mindset
Growth Mindset
At the end of the day, the most important thing for students to know is that they are a mathematician! It is so important for students to know that they can investigate and explore inside AND outside of the classroom. Math lives all around us!
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