Australian Curriculum
year 3
Best Tools to Teach 3- Digit Addition and Subtraction
It’s about that time! Teaching 3-digit addition and subtraction requires patience and practice. If you can find effective practice tools, your students will build their skills until they’ve reached mastery. So, today, I am going to talk about some of the best tools for teaching 3-digit addition and subtraction.
CREATIVE ANCHOR CHARTS
First, I want to talk about anchor charts. We cannot underestimate the interactive anchor chart. With multi-step processes like 3-digit computation, students will need clear visuals, simple steps, and repeated practice.
Creating a simple anchor chart, like the one above shows the students how to set up their problem, reminds them of the rules on the sides, and can be used repeatedly. Be sure to allow space for regrouping, too. This method helps students visually see when regrouping is appropriate! I would recommend laminating a poster like this one and keeping post-its nearby for the continuous opportunities for practice!
When it comes to regrouping, the Post-it note method is so fun. If they add two numbers but get a 2-digit number… the act of cutting apart that Post-It note to represent regrouping can really help kiddos visualize.
GAMIFY WITH SPLASH LEARNING
After students have learned about the process of 3-digit addition and subtraction, they will need practice. Variety in practice can ensure student skill retention. So, I suggest using learning games for part of their skill application. Splash Learning is a great tool for 3-digit addition and subtraction. With games specific to the skill, students can play and practice computation at the same time. There are even digital manipulatives, like base-ten blocks, place value charts, and more!
MORE GAMING FUN
Link: Education.com Games!
Differentiated Group Activities:
Grade 3 will be divided in to 3 groups depending on their ability.
Additional Needs Group:(Enabling)
Calculator Count: Students are given a mystery number (7). Students count forwards by 1 from the mystery number using the constant function on their calculators. Students record their counting patterns on strips of coloured paper. Students also count back using the constant function on their calculators.
Coloured Charts: Students use a number chart to colour numbers when counting up by 10’s.
Mainstream Group:(Consolidating)Calculator Count: Students are given a mystery number (48). Students count forwards by 10’s from the mystery number using the constant function on their calculators. Students record their counting patterns on strips of coloured paper. Students also count back using the constant function on their calculators.
Coloured Charts: Students use a number chart to colour numbers when counting up by 5’s.
Extension Group:(Extending)Calculator Count: Students are given a mystery number (102). Students count forwards by 10’s from the mystery number using the constant function on their calculators. Students record their counting patterns on strips of coloured paper. Students also count back using the constant function on their calculators.
Coloured Charts: Students use a number chart to colour numbers when counting up by 2’s. Extend students by asking them to count and colour by counting up by 4’s, they will realise this is doubling the counting by 2’s pattern.
Coloured Charts: Students use a number chart to colour numbers when counting up by 10’s.
Mainstream Group:(Consolidating)Calculator Count: Students are given a mystery number (48). Students count forwards by 10’s from the mystery number using the constant function on their calculators. Students record their counting patterns on strips of coloured paper. Students also count back using the constant function on their calculators.
Coloured Charts: Students use a number chart to colour numbers when counting up by 5’s.
Extension Group:(Extending)Calculator Count: Students are given a mystery number (102). Students count forwards by 10’s from the mystery number using the constant function on their calculators. Students record their counting patterns on strips of coloured paper. Students also count back using the constant function on their calculators.
Coloured Charts: Students use a number chart to colour numbers when counting up by 2’s. Extend students by asking them to count and colour by counting up by 4’s, they will realise this is doubling the counting by 2’s pattern.
WORKSHEETS FOR ADDITION AND SUBTRACTION
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