Mathematics decks
by Tim Bottman on Nov 04, 2014
This flashcard deck helps reinforce the concepts of halves (1/2) and quarters (1/4).
by Tim Bottman on Mar 11, 2014
Near doubles are also called the “doubles-plus-one” facts and include all combinations where one addend is one more than the other. There are 18 of these facts. When students realize that these are facts that have addends with a difference of 1 (1 + 2), (3+ 4), (5 + 6) etc. they simply double the smaller addend and add 1.
by Tim Bottman on Nov 04, 2014
Are these greater or less than statements true or false. Uses the numbers 0 through 18.
by Tim Bottman on Mar 11, 2014
This set of facts includes all the turn-around facts for the doubles + 1. Students should use their knowledge of addition and fact families to solve these facts. For example, when solving 11 - 6, the student should ask, “What plus 6 equals 11?”.
by Tim Bottman on Mar 11, 2014
The first set of multiplication facts that should be learned are the 2’s facts. Facts that have 2 as a factor are equivalent to the addition doubles (e.g., 2 x 6 is equivalent to 6 + 6) and should already be known by students who know their addition facts.
by Tim Bottman on Mar 11, 2014
This set of facts includes all the turn‐around facts for the helping facts. Students should use their knowledge of multiplication and fact families to solve these facts.
by Tim Bottman on Mar 11, 2014
This set of facts includes all the turn‐around facts for the ones and zeros facts. Students should use their knowledge of multiplication and fact families to solve these facts.
by Tim Bottman on Mar 11, 2014
This level includes a review of all subtraction facts plus 6 facts that have not been covered by any strategies.
by Tim Bottman on Mar 11, 2014
Thirty‐six facts have at least one factor that is either 0 or 1. These facts, though apparently easy, tend to get confused with “rules” that some children learned for addition. Above all else, avoid rules that sound arbitrary and without reason such as “Any number multiplied by zero is zero”.