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https://www.youtube.com/watch?v=ug0gs8kLE48
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“The educational implication of this research is that we need to deemphasize fluency in subtraction in the primary grades and emphasize addition. … We know the reason subtraction is so hard is because they don’t fully understand it because we are focusing too much on making them fluent without building understanding.
https://www.youtube.com/watch?v=j9jQSSMfTGY
https://www.youtube.com/watch?v=_f9aS2wqUTk
subtraction. / (səbˈtrækʃən) / noun. the act or process of subtracting. a mathematical operation in which the difference between two numbers or quantities is calculated.
https://www.youtube.com/watch?v=-mT09qDMb3Q
When we subtract, the number of things in the group reduce or become less. The minuend, subtrahend and difference are parts of a subtraction problem. In the subtraction problem, 7 – 3 = 4, the number 7 is the minuend, the number 3 is the subtrahend and the number 4 is the difference.
https://www.youtube.com/watch?v=ugmE47qWofc
https://www.youtube.com/watch?v=Gf_PBQBzLB0
This is because the plus sign simply lets you know you’re combining two numbers. When you combine a negative number with a positive one, the sum will be less than the original number—so you might as well be subtracting.
By analyzing children’s accuracy and reaction time, it was concluded, in light of Piaget’s theory, that subtraction is harder than addition because children deduce differences from their knowledge of sums.
Why some kids struggle with addition and subtraction
A common one is trouble with a set of skills that are more basic than counting or addition and subtraction. These skills are known as number sense . Trouble with focus can also make it hard to learn addition and subtraction.
https://www.youtube.com/watch?v=hfCSEDT1QjQ
https://www.youtube.com/watch?v=KgAEO8VdgpE
https://www.youtube.com/watch?v=qKxQ33KcRWQ
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https://www.youtube.com/watch?v=Q7q-yrr4D3A
https://www.youtube.com/watch?v=eg9iSgMAJZc
Dyscalculia is a condition that makes it hard to do math and tasks that involve math. It’s not as well known or as understood as dyslexia . But some experts believe it’s just as common. That means an estimated 5 to 10 percent of people might have dyscalculia.
https://www.youtube.com/watch?v=D_UnbGs3ebE