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**Earth and space science**

**Mathematics**

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In this activity, students estimate the size of the visible universe in relation to the size of the Milky Way Galaxy. To do so, students will get a sense of scale and will convert from centimeters to kilometers. This is the first activity in the... (View More) "Hidden Lives of Galaxies" information and activity booklet. It is designed for use with "The Hidden Lives of Galaxies" poster. (View Less)

This interactive, online module allows students to discover the velocity needed to escape the Earth's gravitational pull. By completing this activity, students discover how mathematics can be used to find escape velocity. Students may complete this... (View More) activity independently or in small groups. Detailed teacher pages, identified as Teaching Tips on the title page, provide science background information, lesson plan ideas, related resources, and alignment with national education standards. This module is a subsection of "Is a Black Hole Really A Hole?". It is within the online exploration No Escape: The Truth about Black Holes available on the Amazing Space website. (View Less)

In this activity students use their Log Tapes as a reference for ordered pairs, and graph positive numbers as a function of their base-10 logarithms. They extend each plotted point to the vertical axis, thereby generating a logarithmic scale that... (View More) cuts and folds into an improvised slide rule. This is activity E1 in the "Far Out Math" educator's guide. Lessons in the guide include activities in which students measure,compare quantities as orders of magnitude, become familiar with scientific notation, and develop an understanding of exponents and logarithms using examples from NASA's GLAST mission. These are skills needed to understand the very large and very small quantities characteristic of astronomical observations. Note: In 2008, GLAST was renamed Fermi, for the physicist Enrico Fermi. (View Less)

This is a lesson about representative sampling. When given parts of the Hubble Deep Field image, learners will count the number of galaxies in one sample section of the image. Then, they will calculate how many galaxies there are in each whole image... (View More) and how many objects the Hubble Space Telescope could see in the entire Universe. This is Actividad 8.6 as part of El Universo a Sus Pies, a Spanish-language curriculum available for purchase. (View Less)

This is a lesson about representative sampling. When given parts of the Hubble Deep Field image, learners will count the number of galaxies in one sample section of the image. Then, they will calculate how many galaxies there are in each whole image... (View More) and how many objects the Hubble Space Telescope could see in the entire Universe. This is Activity H-6 of Universe at Your Fingertips 2.0: A Collection of Activities and Resources for Teaching Astronomy DVD-ROM, which is available for purchase. (View Less)

This is an activity about telescopes. Learners will first measure several circles to determine their diameters and calculate their areas. Afterwards, they will cover each circle entirely with pennies and record how many pennies are needed for each... (View More) circle size. The concept to be explored is that a telescope with a larger lens or mirror is able to collect more light than another telescope with a smaller-diameter lens or mirror. This is Actividad 10.2 as part of El Universo a Sus Pies, a Spanish-language curriculum, available for purchase. (View Less)

This is a set of two activities about time. First, in Cosmic Calendar, learners will scale the evolution of the Universe to a one-year calendar, with the Big Bang occurring on the first moment of January first. Then, in Time-Line Scale Model of the... (View More) Age of the Earth, learners will use a 10-meter strip of paper to create a timeline for the evolution of our planet's surface, atmosphere and life. This is Actividad 8.2 as part of the El Universo a Sus Pies, a Spanish-language curriculum, available for purchase. (View Less)

This is an activity about telescopes. Learners will first measure several circles to determine their diameters and calculate their areas. Afterwards, they will cover each circle entirely with pennies and record how many pennies are needed for each... (View More) circle size. The concept to be explored is that as the diameter of a telescope lens or mirror increases, the telescope is thus able to collect more light. This is Activity J-1 of Universe at Your Fingertips 2.0: A Collection of Activities and Resources for Teaching Astronomy DVD-ROM, which is available for purchase. (View Less)

This is an activity about the expansion of the Universe. Learners will use a special set of transparency and master sheets with dots representing clusters of galaxies at two different eras of the Universe's history. After aligning the transparency... (View More) and underlying page, learners then observe and measure clusters moving away from particular locations, graph their data, compute a slope and relate the slope to the age of the Universe. This is Activity H-6 as part of The Universe At Your Fingertips 2.0 curriculum, available for purchase on DVD. (View Less)

This is an activity about the expansion of the Universe. Learners will use a special set of transparency and master sheets with dots representing clusters of galaxies at two different eras of the Universe's history. After aligning the transparency... (View More) and underlying page, learners then observe and measure clusters moving away from particular locations, graph their data, compute a slope and relate the slope to the age of the Universe. This is Actividad 8.4 as part of El Universo a Sus Pies, a Spanish-language curriculum, available for purchase. (View Less)