The focus of this week’s instruction is to deepen students’ understanding of:
- Identify 10 more, 10 less, 1 more, and 1 less than a two-digit number.
- Use dimes and pennies as representations of tens and ones.
- Use the symbols >, =, and < to compare quantities and numerals.
- Add and subtract tens from a multiple of 10.
- Add tens to a two-digit number.
- Student Print Packets for each day
- End of Week Assessment
- Dry erase board with markers
- Sheet protectors for templates
- Linking Cubes (20 per student, 2 colors)
- Pennies and dimes
1.NBT.B.2 Know that the digits of a two-digit number represent groups of tens and ones (e.g., 39 can be represented as 39 ones, 2 tens and 19 ones, or 3 tens and 9 ones).
1.NBT.B.3 Compare two two-digit numbers based on the meanings of the digits in each place and use the symbols >, =, and < to show the relationship.
1.NBT.C.4 Add a two-digit number to a one-digit number and a two-digit number to a multiple of ten (within 100). Use concrete models, drawings, strategies based on place value, properties of operations, and/or the relationship between addition and subtraction to explain the reasoning used.
1.NBT.C.5 Mentally find 10 more or 10 less than a given two-digit number without having to count by ones and explain the reasoning used.
1.NBT.C.6 Subtract multiples of 10 from multiples of 10 in the range 10-90 using concrete models, drawings, strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
- Number bonds
- Base ten blocks
- Linking Cubes
- RDW method (Read, Draw, Write)
- Place Value Chart
- Arrow Notation
- Quick Ten
Additional Terms and Symbols
- Count on (count up from one addend to the total)
- Expression (e.g., 2 + 1 or 5 – 3)
- Part (e.g., “What is the unknown part? 3 + ___ = 8”)
- Total and whole (use interchangeably instead of sum; e.g., “What is the total when we add 3 and 5?”)
- Label (using letters or words on a math drawing to indicate the referents from the story’s context)
- Addition, equal, and subtraction signs
- Equation and number sentence (used interchangeably throughout the module)
- Number bond (graphic showing part–part–whole)
- Equal sign (=)
- A ten (a group, or unit, consisting of 10 items)
- Ones (individual units, 10 of which become a ten)
- Partners to ten
- Teen numbers
- 5 group columns
- Place Value way
- Unit way
- Arrow way
- >, Greater than, more than
- <, Less than, fewer than
- Penny, dime