April 3, 2015
Objective: SWBAT........
This week, students conclude Number Worlds, Level E, Addition. Students will use variables to represent the unknown in one- and two-step addition problems and solve for the variables using subtraction.
- Students can solve for geometric shapes used as variables in equations.
3.OA.8 Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
Vocabulary:
- Addition
- Double Fact
- Near Double Fact
- Nice Numbers
- Grouping
- Regrouping
- Partial Sum
- Carrying
- Equation
- Variable
Activity:
- Warm-Up: Front- end estimation vs. Reference- point estimation
- One Shape Cover-up
- SWB pp.66-67
Debrief:
- Exit Slip: Reflect question on page 67
Homework: None
April 2, 2015
Objective: SWBAT........
This week, students continue Number Worlds, Level E, Addition. Students will explore when and why to estimate sums as well as several methods for estimation.
- Students review skils learned this week and complete the weekly assessment.
3.OA.8 Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
Vocabulary:
- Addition
- Double Fact
- Near Double Fact
- Nice Numbers
- Grouping
- Regrouping
- Partial Sum
- Carrying
- Estimation
- Front- end estimation
- Reference- point estimation
- Rounding
Activity:
- Warm-Up: Front- end estimation vs. Reference- point estimation
- Take weekly assessment
- Introduce new unit
Debrief:
Homework: None
