https://www.khanacademy.org/math/cc-third-grade-math/imp-measurement-and-data/imp-mass/v/intuition-for-grams 2021-06-30T20:49:32Z Understanding mass (grams and kilograms) Sal talks about what mass means. He also examines the masses of real objects in grams and kilograms. video https://cdn.kastatic.org/googleusercontent/Y6-8ycMHIAPVXb6OuFU7Vg8UOAjJt5zgHJim313Sw9lHQXuSvp11aVpXLu9cdOciG2UaxqaGzBGNHcflGtj5FwyeLA Understanding mass (grams and kilograms) Sal talks about what mass means. He also examines the masses of real objects in grams and kilograms. https://cdn.kastatic.org/ka-youtube-converted/zqduFg0s5Q4.mp4/zqduFg0s5Q4.mp4 435 Mass and volume https://www.khanacademy.org/math/cc-third-grade-math/imp-measurement-and-data/imp-volume/v/liter-intuition 2021-06-30T20:49:32Z Understanding volume (liters) Sal talks about what volume means. He also examines the volume of real objects in liters. video https://cdn.kastatic.org/googleusercontent/9PMEUeQ1_WrqxMBe-azsvZqCCMifDOdB40z5u9nPqpUZvkRZUNw5Wn88_fZQndZQxLF6J6aNc5rk91w-V6iyHl7pyw Understanding volume (liters) Sal talks about what volume means. He also examines the volume of real objects in liters. https://cdn.kastatic.org/ka-youtube-converted/mLRYCaYVWFc.mp4/mLRYCaYVWFc.mp4 288 Mass and volume https://www.khanacademy.org/math/cc-fourth-grade-math/imp-measurement-and-data-2/imp-converting-units-of-mass/a/metric-units-of-mass-review 2021-06-30T20:49:33Z Metric units of mass review (g and kg) Review the size of grams and kilograms and how to convert between the two.  Then, try some practice problems. article https://www.khanacademy.org/math/cc-third-grade-math/imp-measurement-and-data/imp-mass/e/estimating-mass 2021-06-30T20:49:31Z Estimate mass (grams and kilograms) Practice estimating the mass of real life objects using grams and kilograms. Lindsay exercise https://www.khanacademy.org/math/cc-third-grade-math/imp-measurement-and-data/imp-volume/e/estimating-volume 2021-06-30T20:49:26Z Estimate volume (milliliters and liters) Practice estimating the volume of real life objects using milliliters and liters. Lindsay exercise https://www.khanacademy.org/math/cc-third-grade-math/imp-measurement-and-data/imp-mass/e/measure-mass 2026-04-08T00:54:09.631945657Z Word problems with mass Solve word problems involving mass.  Read the mass of items from an analog scale. Lindsay Spears exercise https://www.khanacademy.org/math/cc-third-grade-math/imp-measurement-and-data/imp-volume/e/volume-word-problems-1 2026-04-07T22:59:30.107127435Z Word problems with volume Solve word problems involving volume.  Estimate the volume of items. Lindsay Spears exercise