Texas Instruments
Texas Instruments: Periodicity
This Study Card stack will allow students to review the development of the periodic table and the arrangement of elements with similar properties as groups within the periodic table.
Texas Instruments
Texas Instruments: Periodicity of the Periodic Table
Different properties of the elements of the periodic table will be plotted and from this, a system of organization for the elements will be developed.
Texas Instruments
Texas Instruments: Getting Started With the Periodic Table App
In this activity, explore the periodicity of the periodic table with the Periodic Table App.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Circular Functions, Periodicity and Symmetry
Eighteen problems offer practice working with circular functions, periodicity and symmetry. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
NASA
Nasa: Eclipses
The periodicity and recurrance of eclipses is governed by the Saros cycle, a period of approximately 6,585.3 days (18 years 11 days 8 hours). It was known to the Chaldeans as a period when lunar eclipses seem to repeat themselves, but...