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The YELLOW Edges Lesson 8 Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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GOAL: The YELLOW Edges The goal of this stage is to solve for the YELLOW edges. Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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REVIEW from The Yellow Corners Find a face that has matching TOP row corners: Twist the TOP row so that the matching TOP row corners match the center piece color of the face. Position the cube so that the matching TOP row corners and center piece are on the BACK face. If you do not have match TOP row corners on one face: Twist the TOP row until one set of diagonal corners is in the correct positions. When the matching TOP row corners or diagonal corners are in the correct position, follow the algorithm to solve for all the TOP row corners: To get the YELLOW Corners: Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Clockwise The direction the hands on a clock move Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Counter - Clockwise The opposite direction the hands on a clock move Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Lesson Focus Make sure ALL the corners are in the correct position. Find the face that is completely solved. Put the solved face as the BACK Face. If you do not have a solved face, choose any face as the BACK face and complete the algorithm: OR Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Lesson Focus With the solved face as the BACK face, look at the middle piece of each TOP row. Decide whether the middle edges should move – clockwise along the TOP row to solve the cube E to F F to G G to E – counter-clockwise along the TOP row to solve the cube. E to G G to F F to E *The algorithm for clockwise or counter-clockwise may need to be done twice to position the YELLOW edges on the correct faces. Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Lesson Focus With the solved face as the BACK face, look at the middle piece of each TOP row. Decide whether the middle pieces should move clockwise along the TOP row to solve the cube or counter-clockwise to solve the cube. If the middle piece on the TOP row should move clockwise (toward the face to the RIGHT): – E to F, F to G, G to E, then: If the middle piece on the TOP row should move counter-clockwise (toward the face to the LEFT): – E to G, G to F, and F to E, then: Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Troubleshooting Occasionally, solving the YELLOW edges will not solve the cube completely. It may solve each of the faces of each row, but the TOP row will not match the Middle Layer or BOTTOM row. If the TOP row does not match the other rows, twist the TOP row until all the faces are complete. Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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GOAL: The YELLOW Edges The goal of this stage is to solve for the YELLOW edges. Examine your Rubiks Cube. Does your Rubiks Cube look like this? Does your Rubiks Cube look like this? Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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You have achieved The YELLOW Edges Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Review With the solved face as the BACK face, look at the middle piece of each TOP row. If there is not a solved face, complete one of the algorithms below, then reposition the cube with the solved face as the BACK face. Decide whether the middle pieces should move clockwise along the TOP row to solve the cube or counter-clockwise to solve the cube. If the middle piece on the TOP row should move clockwise (2x if needed): If the middle piece on the TOP row should move counter-clockwise (2x if needed): Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Lesson Extension If, after solving for all the YELLOW edges, the faces are not complete matches, we will have to twist the TOP row until the faces are complete. This is similar to solving math problem. Sometimes, the answer we get at a certain step in the problem is not the intended solution for the problem. How does this lesson apply to math? Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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Lesson Extension For example: What percent of 100 is 20? As a number sentence that question is written: Wx100 = 20 By dividing each side by 100, we get 0.2. The solution to the problem is not complete. Even though.2 is the answer to W x 100 = 20, the original question asked: What percent? So, 0.2 must be changed to a percent by moving the decimal over two places. The solution to What percent of 100 is 20? is 20%. How does this lesson apply to math? w x 100 = w = = 20% Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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There are 43,252,003,274,489,856,000 possible configurations. About how many configurations are there? About 43 quintillion. The number is read: 43 quintillion, 252 quadrillion, 3 trillion, 274 billion, 489 million, 856 thousand Review from Previous Lesson Review from Previous Lesson Lesson Vocab Lesson Focus Review from this Lesson Review from this Lesson Lesson Extension Lesson Extension Rubiks Q Rubiks Q

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