Periodic Trends - Directions
Using the Periodic Trends Concept Builder is quite simple. There are three activities in all. All three activities work the same way. You are given the name and elemental symbol for three different elements. You are also provided with a Periodic Table with the location of those three elements identified on the table. You have to rank the three elements according to the value of a periodic property. The activities differ in terms of which periodic property that you must consider. The three properties are atomic radius (atom size), ionization energy, and electronegativity. You can rank the three elements by tappig on the three fields below the table. Tapping on the fields will allow you to toggle through the list of the three elements. Once you reach the end of the list, you can toggle back through "from the top" all over again. The fields are labeled Greatest, Middlest, and Smallest. Rank accordingly. Once a unique element is displayed in the field, a Check Answer button will appear. If you are satisfied with your answer, then tap on the Check Answer button. Your answer will be evaluated and your Progress Report will be updated. If you are not certain of your choice, then you can continue tapping until you are.
Your goal is to earn "Stars" and to complete one or more difficulty levels. Stars are earned when you show success on a particular question. Once you show success on all the questions for a particular difficulty level, you will earn the trophy for that level.