Units of Mass - PowerPoint

In a comprehensive set of teaching resources designed for Year 3 mathematics, the concept of 'Units of Mass' is explored in detail. The material introduces students to metric units of mass, including kilograms (kg) and grams (g), and equips them with the skills to measure, compare, add, and subtract different masses. The resources clarify the difference between mass and weight, explaining that mass is the amount of matter in an object and remains constant, whereas weight can change depending on gravity. For instance, a person's weight is different in space compared to Earth, but their mass stays the same.

Students learn to measure mass using scales and understand that kilograms are used for heavier objects, with an average bag of sugar being a relatable example at 1 kg. For lighter measurements, grams are used, and it's noted that there are 1000 grams in 1 kilogram. The resources include practical activities where students can identify objects that weigh more than a kilogram, and exercises that engage them in converting between grams and kilograms, and vice versa. Additionally, they are taught to compare masses by converting to the same unit of measurement and to perform calculations by adding and subtracting masses, reinforcing their understanding with worksheets that provide real-world examples and problems to solve.