Here is the list of all the Math's Mansion videos, and a link to the YouTube page where you can find them. The names on the YT videos don't always correspond to the content, so look at the list for the correct video first.

https://www.youtube.com/playlist?list=PL47Eq6-2EcXLwkwMHK9qQEyh2L-DXRBUu

1 - Not the Great Big Hen - (9:12) multiply by 10 or 100. 2. Not the Big Hen Again - (9:22) divide by 10. 3. the Deciworms - (9:14) decimal notation for tenths and hundredths. 4. The Negs - (9:24) count backwards into the negative numbers. 5. Fraction Aid - (9:14) fraction and decimal representatives. 6. The Rounding Machine - (9:03) round up decimals 7. Get Some Fraction Action - (9:00) relate fractions to division. 8. The Whole Class Should be Expelled - (9:15) percent and fraction equivalents. 9. The Queen of Tarts - (9:07) ratios and percents. 10. Doing Time - (9:03) simple time problems. 11. Take it Easy - (9:20) calculate differences in your head. 12. Nine Nits Is All there's Room For - (9:23) add and subtract integers up to 3-digits. 13. Breaking Up is Easy to Do - (9:19) multiplication facts up to 10 x 10. 14. You Ain't Nothing But a Houndred - (9:14) multiplication of a 3-digit number by a single digit number. 15. Dividing We Stand - (9:20) divide 3-digits by 1 digit. 16. Double Digit Dating - (9:06) multiply 2 digits by 2 digits. 17. Six Flat Worms - (9:19) area of a rectangle. 18. Learn your Lines - (9:18) parallel and perpendicular lines. 19. Rectangle Delight - (9:15) make rectangles from lines 20. Triangle Delight- (9:12) make triangles from lines. 21. The Return of the Big Hen - (9:28). multiply and divide decimals. 22. Hundredths and Thousandths - (9:22). decimal places. 23. Make and Break: Part 1 - (9:18). recognize patterns on a number grid. 24. Make and Break: Part 2 - (9:20 ). prime numbers. 25. Do the Same to the Top and to the Bottom - (9:02). equivalent fractions. 26. More Fraction Action - (9:13 ). fractions of whole numbers 27. Percentigmole - (9:16). connections between fractions, decimals, percents. 28. Proportionimole - (9:18). equivalency of fractions, ratios, and proportions. 29. Sad Hair Day - (9:18). add and subtract decimals. 30. Another Sad Hair Day - (9:18). multiply decimals and estimate answers. 31. All the Way Around - (9:18). perimeter of simple, complex rectangles. 32. The Worms Return - (9:20). calculate the areas of simple and irregular rectangular shapes. 33. A Very Find Pet is a Polyhedron - (9:19). the attributes of polyhedrons.

34. Better Get back in Shape and Be a Shape - (9:11). name and classify quadrilaterals

35. Angleman - (9:11). use a protractor to measure angles. 36. The X and Y Files - (9:46). read and plot coordinates on the four quadrants. 37. Makeover - (9:06). recognize translations of objects on a grid. 38. Rotations - (9:20). rotate shapes on a grid. 39. On Reflection - (9:11). reflections of shapes. 40. Pie Pie for Everyone - (9:42). learn about pie graphs