Stage 2

Objectives

  • Represent addition and subtraction with models and expressions
  • Add and subtract within 20
  • Understand and apply special properties of addition and subtraction
  • Comprehend word problems to represent them using addition and subtraction expressions
  • Comprehend and solve word problems requiring addition and subtract involving two and three numbers
  • Understand the concept of equations involving addition and subtraction
  • Solve problems involving multiple addition and subtraction expressions or equations
  • Understand the relationship between addition and subtraction and apply them to solve problems
Unit 1: Introduction to addition

Students learn about addition. Concepts learned in this unit include adding with the aid of pictures, horizontal and vertical addition, and addition expressions and sentences.

Unit 2: Addition - word problems

Students learn to comprehend simple word problems and apply addition skills to solve them.

Unit 3: Addition - critical thinking

Students learn to solve problems related to addition skills.

Unit 4: Addition - mental addition

Students practice addition problems to improve the their ability to add quickly and accurately.

Unit 5: Introduction to subtraction

Students learn about subtraction. Concepts learned in this unit include subtraction with the aid of pictures, horizontal and vertical subtraction, and subtraction expressions and sentences.

Unit 6: Subtraction - word problems

Students learn to comprehend simple word problems and apply subtraction skills to solve them.

Unit 7: Subtraction - critical thinking

Students learn to solve problems using subtraction skills.

Unit 8: Subtraction - mental subtraction

Students practice subtraction problems to improve the their ability to subtract quickly and accurately.

Unit 9: Addition and subtraction of single-digit numbers

Students practice addition and subtraction of single-digit numbers.