Apply geometry to packaging, water tanks, and design — a culminating unit that revisits the year's measurement ideas.
Quick read-throughs in plain language — then hit the videos below.
Triangle area: ½ × base × height. Split any polygon into triangles and rectangles you know.
Pick a base, then find the height that goes straight down from it.
Try it
A hexagon splits into 6 triangles, each area 12 cm². Total area?
By the end of this unit, you should be able to:
Each video covers one topic from this unit — read the short blurb below to find the right one.
Length × width × height for box-shaped objects.
Watch on YouTubeReal-world problems about tanks, boxes, and containers.
Watch on YouTubeDecide whether a problem asks for area or perimeter.
Watch on YouTubeAdam's curated problem sets — preview here or open in Google Drive.
Hand-picked links from Khan Academy and trusted worksheet libraries.
A few quick questions to make sure the big ideas stuck. Retake as many times as you want.
Unit 7: Geometry in Action — Surface Area & Volume
A box has dimensions 2 ft × 3 ft × 5 ft. What is its volume?
