diff --git a/education/humanities/Introduction.md b/education/humanities/Introduction.md
index e053c48..cb0bd38 100644
--- a/education/humanities/Introduction.md
+++ b/education/humanities/Introduction.md
@@ -42,7 +42,19 @@ Parts of form:
 2. Color
 	- Hue: The name of the color (red, blue, yellow)
 	- Saturation: The quality or vibrancy of those values
-	- Brightness
+	- Value: The addition of white, black, or grey to the value
+		- Tint: pure hue + white
+		- Tone: pure hue + grey
+		- Shade: pure hue + black
+3. Texture
+	- Texture is an element of art pertaining to the surface quality or "feel" of the work of art
+	- Texture can be described as smooth, rough, soft, etc. Some textures are real, and others are simulated
+	- Textures that can be *felt* are ones that fingers can actually touch.
+4. Space and Mass
+	- Space references to what contains objects: may be 2D or 3D.
+	- Mass refers to the effect and degree of the bulk, density, and weight of matter in space.
+	- In architecture or sculpture, it is the area occupied by a form.
+5. 
 
 | Phrase | Definition |
 | ---- | ---- |