You know you're a math teacher when you look at an actual garden design and decide it would be a good example for scale drawings....
A cottage garden design showcases full plantings of old-fashioned favorites.
Family Garden Design | Owen Chubb Garden Landscapers
Small garden design
Melinda Garden Design
For adults, a path like this is a wonderful way to enjoy the garden, for dogs it’s a continuous racetrack. Brilliant! This with less ambient shrubbery.
Wooden raised bedding
"Small Garden Design | Owen Chubb Garden Landscapes" / like the double-circle
Raised Vegetable beds are simple to make and easy to maintain; use this method and you can achieve a productive vegetable plot where heavy digging becomes a thing of the past. Description from quickcrop.co.uk. I searched for this on bing.com/images
garden shed/buildings | storage shed with greenhouse attached keeps all your gardening needs ...