1. The YELLOW Corners Lesson 7 Lesson 6 Review Lesson Extension
Rubik’s Trivia
Vocabulary
Lesson Focus
Lesson Review

2. GOAL: The YELLOW Corners
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GOAL: The YELLOW Corners
The goal of this stage is to reposition the YELLOW corners on the UP face, to match the center piece color on all faces of the TOP layer.

3. REVIEW from The YELLOW Cross
Look at the YELLOW face.
Match the YELLOW face with:
The single YELLOW center piece and
follow the algorithm:
The YELLOW right angle corner and follow the algorithm:
The single YELLOW line down the middle row of the YELLOW face and follow the algorithm:
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REVIEW from The YELLOW Cross
To get the YELLOW cross:

4. REVIEW from the YELLOW Face
Position the YELLOW cross so that it
matches one of the following:
No YELLOW corner pieces on the UP face
and the LEFT/FRONT UP corner has
a YELLOW piece on the LEFT face.
One YELLOW corner is on the UP face and
the LEFT/FRONT/UP corner has a YELLOW
piece on the UP face.
Any two YELLOW corner pieces on the UP
face and the LEFT/FRONT/UP corner has a
YELLOW piece on the FRONT face.
Use the algorithm:
Reposition and use the same algorithm until all UP face corners are YELLOW.
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REVIEW from the YELLOW Face
To get the YELLOW face:

5. Two non-adjacent opposite corners of a face.
DIAGONAL
Two non-adjacent opposite corners of a face.
A and D are diagonal
B and C are diagonal

6. A&B are on the BACK layer
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Make sure the YELLOW face is the UP face.
Twist the UP face to see if the TOP layer corners can be placed in the correct position (matching their respective RED, BLUE, ORANGE, and GREEN faces).
If all 4 corners match the center piece on all faces, the
YELLOW corners have been achieved.
If the corners do not match:
Twist the UP face to see if any 2 horizontal corners (shown as A&B or C&D) match the center piece color on all three faces.
Position the cube so the matching
horizontal corners are on
the BACK layer.
Lesson Focus
A&B are on the BACK layer

7. A&B corners are on the BACK layer
If you do not have two horizontal corners to
to work with:
Twist the UP face until one set of diagonal corners (shown as AD or BC) match the center piece color on all three faces.
Follow the algorithm 1x to achieve 2 horizontal corners (AB or CD).
Re-position the cube so the matching horizontal corners are on the BACK layer.
Repeat the algorithm to solve the
remaining 2 horizontal layer corners.
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Lesson Focus
A&B corners are on the BACK layer

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If you cannot find matching horizontal or diagonal corners, do the algorithm until you do have matching horizontal corners or matching diagonal corners.
Be sure to check for matches after every completion of the algorithm.
Troubleshooting

9. GOAL: The YELLOW Corners
Examine your Rubik’s Cube
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GOAL: The YELLOW Corners
The goal of this stage is to reposition the YELLOW corners on the UP face, to match the center piece color on all faces of the TOP layer.
Does your Rubik’s Cube look like this?

10. You have achieved The YELLOW Corners
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Congratulations!
Congratulations!
Congratulations!
Congratulations!
Congratulations!
Congratulations!
You have achieved The YELLOW Corners

11. REVIEW With YELLOW as the UP face
Find a face (other than the YELLOW or WHITE faces) that has matching TOP layer corners:
Twist the UP face until two horizontal corners (shown as AB or CD) match with the center piece color on all three faces.
If you do not have two horizontal corners matching on the TOP layer:
Twist the UP face until one set of diagonal corners (shown as AD or BC) match with the center piece color on all three faces.
Follow the algorithm 1x to achieve 2 horizontal corners (AB or CD)
Position the cube so that the matching horizontal corners are on the BACK layer.
Follow the algorithm to solve for all the TOP layer corners:
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REVIEW
To get the YELLOW Corners positioned correctly:

12. Lesson Extension To solve a problem, sometimes you have
to approach it in a different way.
When solving for the YELLOW corners, if you
can’t find matching horizontal corners on the TOP layer,
then you can use matching diagonal corners.
When solving for a math problem, if you can’t solve a
problem one way, then a different approach might
help you solve the problem better.
There are many different strategies to help solve math
problems:
Guess and Check
Diagrams
Lists
Tables
Write an equation
Backwards (answer first, then show the work)
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Lesson Extension
How does this lesson apply to math?

13. Question: How big was the largest Rubik’s Cube? Who built it?
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Question: How big was the largest Rubik’s Cube? Who built it?
Answer: The largest Rubik's Cube was large enough to fit 64 regular Rubik’s Cubes inside.
Daniel Urlings of Luxemburg built it.