What image will each of the four expressions below evaluate to?
If you’re not sure, go to WeScheme and type them into the Interactions Area and see if you can figure out how the code constructs its image.

(beside (rectangle 200 100 "solid" "black")(square 100 "solid" "black"))

(scale/xy 1 2(square 100 "solid" "black"))

(scale 2 (rectangle 100 100 "solid" "black"))

(above
	(rectangle 100 50 "solid" "black")
	(above
		(rectangle 200 100 "solid" "black")
		(rectangle 100 50 "solid" "black")))

For each image below, identify 2 expressions that could be used to compose it. The bank of expressions at the top of the page includes one possible option for each image.

1

a black rectangle that’s twice as tall as it is wide

2

a black square

3

a black rectangle that’s twice as wide as it is tall

★

a black cross, equally tall as it is wide

These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). CCbadge Bootstrap by the Bootstrap Community is licensed under a Creative Commons 4.0 Unported License. This license does not grant permission to run training or professional development. Offering training or professional development with materials substantially derived from Bootstrap must be approved in writing by a Bootstrap Director. Permissions beyond the scope of this license, such as to run training, may be available by contacting contact@BootstrapWorld.org.