Oscar Sheen

Oscar Sheen commented,
Solved. How? Well ... With h. One has to first factor the 8p + 2pq (denominator). Then one can eliminate common terms. That's how one is left with 4 + q (after factoring). If I forget to factor fir...

Oscar Sheen created a post,
Help > Math > Algebra 1 > "3 questions I can't solve."
Please show your working because I can't figure out if it's me or the answers wrong? Thx

Oscar Sheen created a post,
"Comparing linear rates word problems": a Test Quiz question from the Algebra 1 module
I don't get how Khan went from: 15cm 5cm/6hours * t = 25cm  15cm/6hours * t to ... 10cm/6h * t = 10cm It's the 10cm side of the equation that has stumped me for over an hour. For me, there's a st...

Oscar Sheen created a post,
Simplifying quadratic expression
Both of the following expression are equivalent to 16x^2 yet Khan marks one right and the other wrong. That's probably because I am wrong and can't see where I am wrong. Please write me how I'm wro...

Oscar Sheen commented,
Hi Evan, Concerning the subject matter found at Algebra 1 > Working With Units FYI this Youtube video did explain Unit Conversion adequality: (11) Unit Conversion the Easy Way (Dimensional Analysis...

Oscar Sheen created a post,
Rate Conversion & Dimensional Analysis
Concerning Algebra 1 : Rate Conversions. Also known as Dimensional Analysis.I think the hints, and how they are written, need to be revised and improved. Maybe an extra video. But definitely the hi...

Oscar Sheen commented,

Oscar Sheen commented,
I don't know for sure. Post 8 grade courses, they appear to be laid out in at least a degree of logical order because calculus is last because it's harder than algebra 1 and 2 and statistics, for i...

Oscar Sheen created a post,
Statistics & Probability
I'm soon to finish Year 8 math. Having attained 1.5 million points from Grade 1 to 8 thus far. Upon completing Grade 8, next up is Algebra 1. Past that is Statistics and Probabilty. When I finish g...

Oscar Sheen commented,
I've some 1.5million points on Khan in Math alone. I would go back a year or two and do the Unit Tests. The final tests at the end of every unit. There might be, say, 8  12 of them in total. Follo...

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