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In this exercise, students learn about the historical development of the Julian and the Gregorian Calendars and design a reasonable calendar for an imaginary planet, considering the cycle period and making design tradeoffs, This resource is from... (View More) PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)

This is a lesson about gathering information, applying scientific identification processes, and identifying unknown rocks. Learners will conduct an investigation, observe and record the physical characteristics of an unknown rock (meteorite),... (View More) determine the mass of the unknown rock using math skills, determine the density of the rock, describe and classify a meteorite, apply observations and knowledge to the process of a scientific investigation, present evidence to verify classification decisions, and explore concepts of spatial relationships. Completion of all parts of the lesson is necessary to identify the unknown. Advanced preparation and procedural tips are included. This is lesson 13 of 19 in Exploring Meteorite Mysteries. (View Less)

This is a lesson about mapping objects using triangulation. Learners hunt distant meteorites using geometric properties and relationships, demonstrate and experience triangulation, and apply triangulation to directed and group-challenge mapping... (View More) activities. Activities, vocabulary words, and experimental extensions are included. This is lesson 2 of 19 in Exploring Meteorite Mysteries. (View Less)

This is a lesson about the path meteorites take to get from the asteroid belt to Earth and how rare it is for the Earth to be hit by a large asteroid. Three activities comprise the lesson. Learners will draw circles and ellipses to illustrate basic... (View More) shapes of orbits in the solar system (Activity A); construct a scale-model of the inner solar system, observe relative distances and sizes, plot paths meteoroids might take and manipulate models to demonstrate the ecliptic plane (Activity B); and graph the locations of Earth and a near-earth asteroid, observe the significance of time and space, and estimate when the asteroid might cross the orbit of Earth (Activity C). Activities, vocabulary words, and experimental extensions are included. This is Lesson 4 of 19 in Exploring Meteorite Mysteries. (View Less)

This is a lesson about impact craters; the relationships between crater size, projectile size and projectile velocity; and the transfer of energy in the cratering process. Learners will create plaster of Paris or layered dry impact craters and... (View More) conduct controlled experiments using mass and velocity as the independent variables. Energy calculations for advanced classes, and vocabulary words are included. This is lesson 6 of 19 in Exploring Meteorite Mysteries. (View Less)

Materials Cost: $1 - $5 per group of students

This is an activity about the size of the Moon. Learners will calculate the diameter of the Moon using proportions. This activity is in Unit 1 of the "Exploring the Moon" teachers guide, which is designed for use especially, but not exclusively,... (View More) with the Lunar Sample Disk program. (View Less)

Materials Cost: 1 cent - $1 per group of students

This activity is about scale and distance. Learners will use simple sports balls as scale models of Earth and the Moon. Given the astronomical distance between Earth and the Moon, students will determine the scale of the model system and the... (View More) distance that must separate the two models. This activity is in Unit 1 of the Exploring the Moon teachers guide, which is designed for use especially, but not exclusively, with the Lunar Sample Disk program. (View Less)

This math example shows how to calculate the distance one can see from different heights using trigonometry. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers... (View More) showing how math and science topics taught in K-12 classes have real world applications. (View Less)

This is an activity about observation. Learners will first observe a first quarter Moon and as a group, predict which phase the Moon will be in during the next observation. After this, learners will continue to chart the progress of the lunar cycle... (View More) of phases throughout the following weeks to better understand the sequence. This is Activity A-2 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 telling time. Learners will construct a northern-hemisphere star clock and will set their star clocks based on the position of the Big Dipper in the sky. Then, they will use their star clocks to predict where the Big Dipper... (View More) will be at a given time and month. This is Activity F-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)