| Title | Description |
| NCTM Illuminations |
This collection of interactive applets is aimed for math teachers and students. It explores various K-12 math concepts. |
| Nrich Interactive Resources |
This collection of interactive applets is aimed for enriching the typical secondary education lessons. There are applets for primary
and seconday students. It explores various K-12 math concepts. |
| The Math Learning Center |
This collection of interactive applets is aimed for student exploration. They have many applets that
give students the tools necessary to explore specific math concepts. Examples of concepts talked about are: fractions, time,
patterns, money, and many more. This collection is aimed for students in grades K-8. |
| National Library of Virtual Manipulatives |
This collection covers numbers and operations, geometry, measurements, algebra, and data analysis and probability.
It goes from grades prek-12. The applets are accessed through a link and they are not open access. Teachers would have to
purchase the software for the rights to use them in the classroom.
|
| Math Ed Applets |
Math Ed applet collection has algebra, functions, arithmetic, geometry, virtual manipulatives, and other applets. These
are mainly expanding on the concepts from classes and are not purely instructional, they are more exploratory.
The applets seem to be created using GeoGebra. The applets are open access and can be used by anyone.
|
| Title | Description |
| 3D Sextant | This applet provides a 3D perspective of a sextant.
The visual allows manipulations including adjusting the angle of the arm. In addition to basic viewing, if you select the
labels on the different parts of the sextant, you can read a small description about what that part does. It was
created by Claude AI with prompting from Laurel. |
| Sextant Simulator | This applet focuses on estimating
angles. This is related to navigation because a lot of navigation is being able to see and estimate angles. It is important to have
a sense for angles to be able to reason about the angles you are measuring with a sextant. This applet was created by NRICH.
|
| Sextant Simulator | This applet gives students the ability to practice lining up the sun and the horizon using
the arm. It shows the angle in degrees and arc-minutes. This applet was created by Claude AI with prompting from Laurel. |
| Soccer Angles | This applet
steps students through the different angles that a soccer player may need to use. It has manipulatives at different intervals in the
explanation that steps students through the problem. This applet was created by Math Ed Applets.
|
| Globe with Angles | This interactive graphic allows students to explore the
different angles that are used when calculating the longitude of a ship. This applet was created by Claude AI with prompting from Laurel. |
| Title | Type | Description |
| Coordinately |
website |
Coordinately has an article that talks about the sextant. It uses the concepts behind the sextant to explain how it works.
This includes an explanation of the double reflection principle and its applications.
|
| Science Museum |
website |
Science Museum covers the history of nautical navigation, specifically the longitude problem. It goes into the ways people were navigating
and the perils they had to avoid. Following the evolution of measurement instruments, it goes into the way in which sextants and chronometers were
invented and used.
|
| NOAA |
website |
National Oceanic and Atmospheric Administration (NOAA) created a webpage that talks about the differences between longitude
and latitude. It has very helpful diagrams that highlight the way they were created and how they are measured.
|
| TedED |
video |
This TedED video talks about how math guides ships and what math is behind the navigations. It is focused mainly
on informing what was used and why versus how it was used. It is more for overall historical context without diving into the
way the math works.
|
| Map Men |
video |
Map Men talk about the longitude problem and how the sextant helped with this. They go into
previous ways of nautical navigation and their limitations. The video deeply discusses the aspects of
navigation that makes not knowing your longitude especially dangerous.
|
| Sextant Tutorial: The Principles of the Sextant |
video |
This video covers the indepth workings of a sextant, from design to purpose.
|
| Casual Navigation |
website |
This article is stepping through the basics of what a sextant is and how it works. It goes over what they are used for with various
visuals and other references.
|
| Applet |
applet |
This website has an activity where you can practice sailing and taking the measurements of the stars and other celestial bodies
to locate your longitude. It is created by the Smithsonian Museum.
|
| Trigonometry in Navigation |
website |
This article goes over the basic trigonometry that is used in navigation. It goes in depth in spherical trigonometry
and other aspects of sine and cosine functions in regard to the different celestial bodies being measured.
|