Grade 2+ · Type the answer
Facts known 0 out of 55 (within 10) / 0 out of 210 (within 20)
A fact is known after two correct answers in a row. A miss starts that fact over. Within 10 sits inside within 20.
Which facts?
Cards look like 8 − 3 = ?.
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Grade 2+ · Type the answer
A fact is known after two correct answers in a row. A miss starts that fact over. Within 10 sits inside within 20.
Cards look like 8 − 3 = ?.