Unit 9 (2nd ESO): Shapes.

Video 1: Polygons: https://www.youtube.com/watch?v=IaoZhhx_I9s

Video 2: The Shapes Song: https://www.youtube.com/watch?v=cWamZya70ZI

Video 3: 3D Shapes I Know (Solid Shapes song): https://www.youtube.com/watch?v=2cg-Uc556-Q

Unit 8 (2nd ESO): Pythagoras' Theorem. Similar Shapes.

Video 1: Angle Basics: https://www.youtube.com/watch?v=DGKwdHMiqCg

Video 2: Triangles: https://www.youtube.com/watch?v=mLeNaZcy-hE

Video 3: Pythagoras Theorem Song Fun: https://www.youtube.com/watch?v=ZJ0MnpwUjoM

Unit 7 (2nd ESO): Simultaneous Equations

Video 1: Graphical Solution Of Simultaneous Linear Equations: https://www.youtube.com/watch?v=NPzlCNDEJqA

Video 2: Solving Linear Systems of Equations Using Substitution: https://www.youtube.com/watch?v=cwHR_B9zK7k

Video 3: Solving Systems of Linear Equations Using Elimination: https://www.youtube.com/watch?v=s7S3oJ_0Uvo