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**Earth and space science**

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In this activity, students develop reasonable calendar designs for an imaginary planet using factoring as a problem solving strategy. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by... (View More) scientists and engineers showing how math and science topics taught in K-12 classes have real world applications. (View Less)

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)

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 distance that must separate the two models. This... (View More) 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 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

Learners will conduct an investigation, observe and record the physical characteristics of an unknown rock (meteorite), determine the mass of the unknown rock using math skills, determine the density of the rock, describe and classify a meteorite,... (View More) 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 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)

In this activity, learners build a sextant to measure the altitude, or height above the horizon, of an object. The activity was originally designed to accompany a previous NASA-funded educational program, entitled The Sun in Time.

In this introductory global change investigation, students gather and record visual and written data from their surroundings, and through analysis, show how the sampling window chosen for examination can affect an outcome, sometimes resulting in... (View More) false conclusions. Connections between their observations and the study of climate change using imagery and data sets is discussed. Use of a camera is suggested for this activity. This activity is part of the Ground Truth Studies Teacher Handbook, which provides more than 20 activities to build student understanding of global change and remote sensing, and includes background chapters for teachers, glossary, and appendices. (View Less)