You can compare length, weight, area, and volume with your eyes, even without knowing the numbers. Move the sliders and see which side is bigger.
When comparing the length of two objects, it's important to line up one end first. Then you can instantly see how much further the other end reaches. You can compare weight by holding one object in each hand, or by using a tool like a seesaw or balance scale that tips toward the heavier side.
For area, if you overlap two shapes and one completely covers the other, that one is bigger. If they're hard to overlap, you can divide both into equal-sized squares and count how many squares each one fills. Volume is how much something can hold โ if the containers are different shapes, pouring the same liquid into identical cups and comparing the height gives an accurate answer.
For now, you don't need units like cm or kg โ just knowing "bigger" or "smaller" is enough. Move the A and B sliders and see how the result sentence changes.