video1.0<iframe src="https://www.loom.com/embed/a15f4e4064b342ccb0a4050ade9c01cf" frameborder="0" width="1838" height="1378" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>13781838Loomhttps://www.loom.com13781838https://cdn.loom.com/sessions/thumbnails/a15f4e4064b342ccb0a4050ade9c01cf-5d65558ba7e7ec69.gif1315.721This Loom works through several grade 4 non-calculator geometry and angle problems step by step. It calculates a rectangular frame’s missing diagonal using Pythagoras with 5 and 12 to get 13, totals the metal length as 47 meters, and multiplies by 1.5 kg per meter to obtain 70.5 kilograms. It then finds shaded area as the medium circle minus the smallest circle using radii 4, 7, and 10 to get 33pi, and compares the shaded proportion 33pi out of 100pi to show it is not exactly a third. The Loom also explains constructions of perpendicular bisectors and perpendicular lines using compass and ruler, and solves angle problems using triangle angle sums, straight line sums, and parallel line angle relationships.