New: grade07All contenthive-129948hive-196917krzzanphotographysteemhive-183959hive-180932hive-185836uncommonlabhive-166405hive-150122bitcoinhive-183397hive-144064hive-145157hive-109690hive-139150lifekrsuccesshive-101145hive-188619hive-150943hive-124908hive-184714TrendingNewHotLikerstradersharpe (57)in steemiteducation • 7 years agoReflecting on why Negative times Negative is positiveMost of us have been taught (or indoctrinated, to be honest) to accept that a negative number multiplied by a negative number yields a positive number, but would be hard-pressed to explain why.…tradersharpe (57)in steemiteducation • 7 years agoMr Sandman and Mr Upside-Down in ActionI have introduced Mr Sandman and Mr Upside-Down in an earlier article . In this article, I shall illustrate integer arithmetic with more examples. Remember that what our Sandman calls a “hole”…tradersharpe (57)in steemiteducation • 7 years ago[ Algebra ] The Swapping Trick for DifferencesWhat is - (a – b)? Do you have a quick way to simplify this? It turns out that the answer is very easy! Just swap the two quantities. For example, -( 3 - 5 ) = 2. This is the same as result of…tradersharpe (57)in steemiteducation • 7 years ago[ Algebra ] Double NegativesIn linguistics, double negatives are a no-no. Two wrongs do not make a right. Or do they? Well, if you ask a mathematics teacher, this might be the case. For example, -(-2) = 2. But why? Why…tradersharpe (57)in steemiteducation • 7 years ago[Algebra] Crossing the Bridge over troubled watersThis article introduces what I call the "crossing the bridge" short-cut. Here is an example of an algebraic equation solved using the standard orthodox methods. To "get rid" of the 8 on the…tradersharpe (57)in steemiteducation • 7 years ago[Algebra] Flipping with the EscalatorI have written about Flipping and the Escalator Trick . It is possible to combine the two. Here is an example done previously by the escalator only, but now re-done using a combination of…tradersharpe (57)in steemiteducation • 7 years ago[Algebra] Flipping FractionsHere is a problem done by standard orthodox methods. We multiply both sides of tbe equation by 3x, which is a legit procedure. On the LHS, we cancel the x's, and on the RHS, we cancel the 3s.…tradersharpe (57)in steemiteducation • 7 years ago[Algebra] The Escalator Trick -- Part 3I introduced The Escalator Trick, a very powerful short-cut in Part 1 and Part 2 Today, I show you how to melt a "difficult" problem like wax. Take a look at this. How do you even…tradersharpe (57)in steemiteducation • 7 years ago[Algebra] The Escalator Trick -- Part 2Yesterday, I gave some easy examples on "the escalator trick" Part 1 which is a useful short-cut. Today we tackle some slightly more challenging examples. What if the unknown ('x') appears in…tradersharpe (57)in steemiteducation • 7 years ago[Algebra] The Escalator Trick -- Part 1In this article, I introduce an algebraic short-cut. This is for Secondary 1 mathematics in Singapore, approximately grade 7. Let us look at an example. The standard way is to multiply the…
