Curated OER
Scatterplots
In this scatterplots activity, 9th graders solve 18 different types of problems related to scatterplots. First, they represent a two numerical variable on a scatterplot and describe how the data points are distributed. Then, students...
Wolfram Research
Wolfram Math World: Probability and Statistics
This is a resource for many topics in probability and statistics. Click on the topic of your choice for an explanation. The sites you will be linked to are quite extensive. A degree of higher-level math is necessary for understanding...
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 3
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Periodic Trends: Ionization Energy: Lesson 3
This lesson will explain how the ionization energy changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Ionization Energy."
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 2
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 2 of 3 in the series titled "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Period Trends: Ionic Size: Lesson 3
This lesson will explain how the ionic radius changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Period Trends: Ionic Size."
CK-12 Foundation
Ck 12: Chemistry: Metallic and Nonmetallic Character
[Free Registration/Login may be required to access all resource tools.] Covers metallic character, nonmetallic character, and periodic table trends.
Shodor Education Foundation
Shodor Interactivate: Stats and Probability Concepts
Many topics on Statistics and Probability are defined and linked here. Click on any of them to move to a more detailed discussion of the term.
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 1
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 1 of 3 in the series titled "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Period Trends: Ionic Size: Lesson 1
This lesson will explain how the ionic radius changes over representative elements across rows and up and down columns on the periodic table. It is 1 of 3 in the series titled "Period Trends: Ionic Size."
Sophia Learning
Sophia: Periodic Trends: Electron Affinity: Lesson 3
This lesson will explain how the electron affinity changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Electron Affinity."