Reply to No doing well with Common Core, but we'll with Singapore math

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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]
But I had to read this four times myself to understand what needs to be done.  And I took Calculus.

I'm not sure six year olds know what "double facts", " addends", "grouping methods".  What the hell is " double plus one" supposed to mean?

I definitely am not going to follow this curriculum at home.  Singapore math doesn't have all these confusing  terminology, it just focuses on simplest and most efficient strategies.
[/quote]

Singapore math does indeed have this terminology.

From the teacher manual:

https://www.singaporemath.com/v/sf_pmcctg1a.pdf

counting on

"This chapter also introduces students to a “count on” strategy for addition. This strategy will
help them work out some addition facts before they can memorize them. They can use this
strategy for + 2 and + 3 addition facts. It will become particularly useful later in Grade 3 when
examining what happens when the tens digit changes, or adding and subtracting numbers
close to a multiple of ten, for example, 25 + 28 = 25 + 30 ? 2."

doubles facts and doubles plus one facts:

"Dot cards can also help students initially with visualizing the addition facts for adding on to 5,
the facts that make 10, doubles (e.g., 4 + 4), and doubles + 1 (e.g., 4 + 5 is the same
as double 4 + one more). Students should by now be able to recognize numbers from dot
patterns without having to count."[/quote]

You are selectively quoting from the beginning first semester teachers guide. Counting on and doubles are only used to help kids memorize facts up to 10. By the middle of first grade kids are supposed to have memorized these facts because they are NOT used when adding over 10. Here is the next sentence in the teachers manual that you didn't include.

Students will probably be able to count on 1, 2, or 3 quickly without using fingers. Fingers can be used if needed to begin with. Note that counting on as a strategy is used only for adding 1, 2, or 3 in this curriculum. The goal is quick computation, and with adding on greater numbers, it becomes harder to keep track of how many are added on and to know where to stop without fingers or number lines.[b] Also, adding numbers where the sum is greater than 10 will be taught in the context of the base-10 concept.[/b]

So 6 +7 is never taught as a double +/- 1 in Singapore Math. [/quote]

Not that PP. Doubles are not the last way to add, they are one of the first ways. One strategy, to use at the beginning of learning about addition. They are not the end goal, although bad math programs/teachers might teach them as if they are. Just one way to use numbers. PP was showing that even Singapore math describes them as a first method, before students memorize addition facts.

There's no need to get angry about doubles, counting on, etc. These are very junior-level strategies that students will soon move on from.[/quote]

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