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Level Two > Number and Algebra

Using Tens Frames for the Strategy of Bridging to Ten

Purpose: 

The purpose of this unit is to introduce the part-whole strategy of bridging to ten.

Achievement Objectives:

Achievement Objective: NA2-3: Know the basic addition and subtraction facts.
AO elaboration and other teaching resources
Achievement Objective: NA2-1: Use simple additive strategies with whole numbers and fractions.
AO elaboration and other teaching resources

Specific Learning Outcomes: 

bridge to ten to solve number problems

Required Resource Materials: 
Tens frames with 9 fixed dots
Blank frames
Counters
Activity: 
  1. The teacher poses a problem.
    Josh has 9 oranges and 6 apples.  How many does he have altogether? ten board.
  2. Teacher records 9 + 6 on the board.
  3. Teacher shows a fixed frame of 9 and asks the students to say where the six more should go without touching the tens frame.
  4. Teacher invites a student who answers that the answer is 15 to come and demonstrate how they got the answer.
  5. Teacher records the answer on the board.
  6. If the students “count-on” teacher encourages them to think about adding one and then five by asking the follow up questions:
    Can we work it out without counting-on?
    Or   Is there a faster way?
  7. Repeat with 9 + 7, 9 + 6 with the students demonstrating using either the teacher’s model or individual equipment.  Teacher encourages students to explain their thinking.
  8. Teacher focuses student attention on the importance of making a ten
    Why do you make a ten?

Note: future lessons could be extended to include 8 + ? and then 18 + ? with the pace depending on the students.