Galaxy Hunter
Teacher Page: Overview


Description / Overview of the Lesson
How to prepare for an "Online exploration"
Process Skills Acquired
Target Audience / Grade Levels
Preparation Time
Execution Time
Field Tested
Last Update


Description / Overview of the Lesson:

This lesson reinforces students' understanding of simple random sampling using real data from the Hubble Deep Fields (HDFs). The Hubble Deep Fields - one looking north (HDF-N) and the other south (HDF-S) - are the deepest, sharpest, multi-color images of the faintest universe in visible light. A unique feature of the lesson is its reliance on the statistical analysis of real data. This data can be easily accessed from the Internet, independent of the lesson. Students will pick a sample of galaxies from one of the Deep Fields. They will determine if their sample data is valid by investigating bias in sampling techniques and the role of sample variability in determining the optimal sample size. A second sampling, from the second Deep Field, offers the chance to put improved sampling techniques to use. Comparisons between the students' valid data and the astronomers' results lead to a determination of whether the two Deep Fields are similar. The lesson concludes with an invitation to consider whether the distant universe of the Deep Fields is similar to the local universe.







Before attempting to complete this lesson, the student should:

Process Skills Acquired:

Target Audience/Grade Levels:


Preparation Time:

    1. Time necessary to download computer software to support the lesson (Netscape Navigator 4.0).
    2. Time necessary to become familiar with the lesson.

Execution Time by Module:

The following are approximate times depending on your school's Internet location (e.g., classroom, library, computer lab), the number of computers available with Internet access, and the number of students in the class.

Field Tested:

In progress.

Last Update:

January 8, 2004


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