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AOPS Algebra 1 Course, Lesson 13, 12/08/2019

Today, students continued to work on coordinate plane and straight line. Students studied the distance between two points in the coordinate plane through the Pythagorean theorem, midpoint coordinates between two points, slope of straight line passing through two points, and … Continue reading

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AOPS Algebra 1 Course, Lesson 12, 11/24/2019

Today, students continued to study the word problems associated with “rate”, driving from one place to another, average speed, working rate, rowing boat in downstream and upstream. The most challenging part is in the working rate, and people are involved … Continue reading

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Singapore Math 8th Class, Lesson 12, 11/24/2019

Today, students behaved quite well in the class. We smoothly moved forward in the math study. I finished word problems solving by using quadratic equations, and introduced algebraic fractions, including simplifications of fractions, multiplication and division of algebraic fractions, addition … Continue reading

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AOPS Algebra 1 Course, Lesson 11, 11/17/2019

Today, students worked on percentage and proportion such as direct proportion, inverse proportion, joint proportion and applications. Some students still feel challenging in percentage application questions. Fundamentally, students do need to have solid conceptual comprehension, then work on real problems. … Continue reading

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Singapore Math 8th Class, Lesson 11, 11/17/2019

In today’s class, students continued to study solving quadratic equations by using factorization. Different types of quadratic equations were introduced in the class. The word problems that use quadratic equation knowledge were demonstrated to students, such as finding numbers, finding … Continue reading

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AOPS Algebra 1 Course, Lesson 10, 11/10/2019

Today, students continued to study ratio in the application problems. In addition, students learned the definition of percent and standard formulas for percentage, increasing percent and decreasing percent.Here is the homework assignment:P.166, 6.2.5, P.172, 6.3.1, 6.3.3, 6.3.4, 6.3.6, P.176, 6.4.1, … Continue reading

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AOPS Algebra 1 Course, Lesson 9, 11/03/2019

In today’s class, students continued to work on word problems since it is a challenging section in Algebra for most of the students. The summary of strategy to write the algebraic expressions and equations is useful for students to master … Continue reading

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AOPS Algebra 1 Course, Lesson 8, 10/27/2019

Today, students continued to study the method of solving two-variable linear equations, elimination. In general, the methodology of solving multi-variable linear equation is to reduce two variables to one variable. Not all two-variable linear equation system has solution. One solution … Continue reading

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Singapore Math 8th Class, Lesson 8, 10/27/2019

Today, students continued to explore the quadratic expression factorization ax^2+bx+c when a=1 and other than 1. Factorization is one of four methods in solving quadratic equations. When a quadratic equation is factorized, using factorization in general is considered first. Therefore, … Continue reading

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AOPS Algebra 1 Course, Lesson 7, 10/20/2019

In today’s class, students reviewed linear expression/equations and studies a few examples of word problems to understand the key points and general strategy in solving the word problems in math. In the two-variable linear equations, students learned the idea of … Continue reading

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