Grade 1 Lesson plan
Bramble Hill's Leaf Bags: A Grade 1 Adding Tens Lesson
A 45-minute grade 1 lesson where students add tens and ones with bundled cubes to total the leaf bags cleared from a school's storm drains.
Common Core Math · Grade 1
1.NBT.C.4 Add within 100 using place value strategies
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Why water teaches this standard well
Students add the number of water bottles collected by two classroom recycling bins, one holding a two-digit count and the other a single-digit count, using place-value drawings to combine tens and ones. Composing a new ten mirrors what happens when a rain gauge total crosses a round number.
Materials tagged with this code are written to the full standard , and each carries a written note explaining the alignment. See how we review materials.
3 materials aligned to 1.NBT.C.4
Lesson plans
Math problem sets
Grade 1 Math problem set
Room 4's Reusable Bottle Count at Hazel Grove: A Problem Set
A grade 1 math problem set where students add and subtract a classroom's daily water-bottle refill counts to find weekly totals and comparisons.
Classroom activities
Grade 1 Classroom activity
Aspen Grove's Recycling Relay: A Grade 1 Bottle-Counting Game
A grade 1 relay game where two teams add a small new bottle count onto their growing two-digit total each round, practicing place-value addition strategies within 100.