<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Sat, 09 May 2026 02:46:28 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/created/grade07/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[Reflecting on why Negative times Negative is positive]]></title><description><![CDATA[Most 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. Even adults]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/reflecting-on-why-negative-times-negative-is-positive</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/reflecting-on-why-negative-times-negative-is-positive</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Sun, 24 Sep 2017 05:53:42 GMT</pubDate><enclosure url="https://images.ecency.com/p/vM1pGHgNcyCiaxZmdb555hkjecmqomntNdRp7jgAMMqcjX6x5hE96s6fvbJfVEvUvN2pYFw1XixN37n17yLjbTS8guXEzumtPM6LtE15PfE4tCDsneMgN6MmHqnui5enyq2siQE?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Mr Sandman and Mr Upside-Down in Action]]></title><description><![CDATA[I 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” is a “mound”]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/integers-illustrating-addition-and-subtraction-with-negative-numbers</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/integers-illustrating-addition-and-subtraction-with-negative-numbers</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Sun, 17 Sep 2017 01:23:57 GMT</pubDate><enclosure url="https://images.ecency.com/p/54TLbcUcnRm4iYtFdzVNy1kt3F2tvRShXkTnWxjMrHs3oZ5uSHa6H94cKcGL88ay41knLoKiLQeJvUEXbsfUKYCndfjzmtN2NPW1tg5wULayFfHN5SLcpeJ1NKKSbrfbciLrjv8H4?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[ Algebra ] The Swapping Trick for Differences]]></title><description><![CDATA[What 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 5 – 3. How]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-the-swapping-trick-for-differences</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-the-swapping-trick-for-differences</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Sat, 16 Sep 2017 06:22:00 GMT</pubDate><enclosure url="https://images.ecency.com/p/2FFvzA2zeqoVZ5NRzV2o8MyJEzowAL6rjbt8w3dTGwqrufVTZZwMabiijYxKUWEL87ZskdLtVA4Tbq7veAMAD6iPUcCzTTjvBv66sMzhGwqphxeBap1qbzRzJQShC?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[ Algebra ]  Double Negatives]]></title><description><![CDATA[In 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? Why? Tell]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/-algebra---double-negatives-1505425668-0068433</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/-algebra---double-negatives-1505425668-0068433</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Fri, 15 Sep 2017 05:56:24 GMT</pubDate><enclosure url="https://images.ecency.com/p/D5zH9SyxCKdBnJaFeHnL3svQi9ZN2XzXDbzH7Wc9siqf4YgidqgjzUD72PXXgFunFBHmKTV5Pr8zhw2672YREwjcSofZ8Svn6zmGqgvHFC9BAMDH363ohiMmZhQZvzLT25o7RG?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Algebra]  Crossing the Bridge over troubled waters]]></title><description><![CDATA[This 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]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-crossing-the-bridge-over-troubled-waters</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-crossing-the-bridge-over-troubled-waters</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Wed, 13 Sep 2017 04:42:12 GMT</pubDate><enclosure url="https://images.ecency.com/p/7258xSVeJbKnFEnBwjKLhL15SoynbgJKpQxRd1uosjPznVvwseBLfSBMSj2gs9q2TAF32g7CJ95WRgpMun6EiKv9kHR5ZRpxrsH3Ko1U35PtfroZSRotfWAhpPDgiJPatJCasrVvSSqjC?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Algebra]  Flipping with the Escalator]]></title><description><![CDATA[I 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 Flipping and]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra--flipping-with-the-escalator-1505141414-87876</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra--flipping-with-the-escalator-1505141414-87876</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Tue, 12 Sep 2017 06:05:51 GMT</pubDate><enclosure url="https://images.ecency.com/p/6VvuHGsoU2QD2aHbJiivbVZV6nAA4BJrX2xi1Ybtx4HCWmrkegDMcYms6frdUCHZ8EMxJKq6UHZpwegT23K1jgeccKuSAA2VNCEwyNRFsf347XwS1yzfc2ppzVHmqx?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Algebra]  Flipping Fractions]]></title><description><![CDATA[Here 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. We now have]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-flipping-fractions</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-flipping-fractions</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Mon, 11 Sep 2017 05:07:21 GMT</pubDate><enclosure url="https://images.ecency.com/p/3jpR3paJ37V8t3d5gG8YxUrFtTrvhgCDjjN8jFs75e5pPVBCtuBzPYpf8FBbtHotSeR4Ppth4UF8mao82LpVnTF1KBJhNVvx943zAeRodWfWEqZFE1d43syZmN7o95gPfodUi?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Algebra]  The Escalator Trick -- Part 3]]></title><description><![CDATA[I 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 begin? You]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra--the-escalator-trick----part-3-1504974023-5599546</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra--the-escalator-trick----part-3-1504974023-5599546</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Sun, 10 Sep 2017 05:59:30 GMT</pubDate><enclosure url="https://images.ecency.com/p/D5zH9SyxCKdBnJaFeHnL3svQi9ZN2XzXDbzH7Wc9sjMvLxM51rzr7qrkLdw2AN3izW3a7LruW8XYN3zjHRYDvv8iqBCb7pgoSFRBVdgHhpFLw9Hc2798MCsrwD9WewXjDrqpvz?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Algebra]  The Escalator Trick -- Part 2]]></title><description><![CDATA[Yesterday, 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]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-the-escalator-trick-part-2</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-the-escalator-trick-part-2</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Sat, 09 Sep 2017 06:33:27 GMT</pubDate><enclosure url="https://images.ecency.com/p/D5zH9SyxCKdBnJaFeHnL3svQi9ZN2XzXDbzH7WcA2V7xJYU6BiFFV3pp5b4D6Yz8dyVjoaGP5wuKqFkxQnLxnmGsqHrXfS4GUVsJmnvMyP1TYFBm7hyv881fzNjWUhEkiQfVvv?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[[Algebra]  The Escalator Trick -- Part 1]]></title><description><![CDATA[In 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 left-hand side]]></description><link>http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-the-escalator-trick-part-1</link><guid isPermaLink="true">http://direct.ecency.com/steemiteducation/@tradersharpe/algebra-the-escalator-trick-part-1</guid><category><![CDATA[steemiteducation]]></category><dc:creator><![CDATA[tradersharpe]]></dc:creator><pubDate>Fri, 08 Sep 2017 03:08:27 GMT</pubDate><enclosure url="https://images.ecency.com/p/cyxkEVqiiLyAJMrzqHfWLT7YbdgoprDQGwdeDRwrcZa4kvuHUPpde3oGbc3KgxRdC5HaVRLuJy3fynhXNv2gcZBZFX2xptXQJLm6J1aXDHMwspp6E9aDE4izbEBds449Dq8?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>