Lunar and Planetary Institute






Space Stations - Beans in Space!
EXPLORE! Health in Space

Space Stations - Beans in Space!

Overview

Children perform 20 bicep curls with cans that simulate the weight of dried beans on Earth and the weight of the same number of beans on the Moon or in space. They explore how astronauts need to exercise each day — just like us on Earth — but for 2+ hours each day!  

Activity Time

5 minutes

Intended Audience

Families or other mixed-age groups, including children as young as 4 years old with assistance from an older child, teen, or adult
School-aged children ages 5–7 and 8–9
Tweens up to about age 13

Type of Program

Facilitated hands-on experience
Station, presented in combination with related activities
Passive program
☐ Demonstration by facilitator

What's the Point?

  • Astronauts — and kids! — need to exercise to stay healthy.
  • Because astronauts float in space, their muscles do not need to work as hard as they did on Earth, and they become smaller and weaker (i.e., begin to atrophy).

Facility Needs

  • 1 or more tables
OR
  • A large container to hold the activity materials

 

Materials

For the facilitator:

For Each Group of 1–3 Children

  • 3 opaque non-breakable containers (clean, empty coffee cans work well)
  • Tape (to seal the containers)
  • 3 ½ cups of dried beans, any type
  • Paper or foam to stuff inside the Earth and Moon cans so that the beans don't rattle
  • 3 labels, one for each can
  • Beans in Space Children's Guide

Preparation

  • Six months before the activity

    • Determine the setup of your program, including any complementary activities or extensions that you’d like to combine with this activity. This activity may be offered as a brief learning experience on its own, as part of a longer facilitator-led program, or as a station in combination with other health- and space-related activities. For passive programs, plan to provide the materials at a table that can be visited by small groups or individuals. For facilitated programs, consider using an “icebreaker” activity to help the children get to know each other. If stations are set up, it is recommended that an adult or older child is present at each station to serve as a host and to prompt the children's thinking. Station hosts may also demonstrate and/or assist younger children in completing the activity.
    • Prepare and distribute publicity materials for programs based on this activity. If possible, build on the children’s knowledge by offering multiple science, technology, engineering, art, and mathematics (STEAM) programs.
    • Pull supporting resources out of circulation to feature during the program. If possible, integrate online videos and website resources into the program. See the Health in Space resource lists for ideas!
    • Review the Beans in Space Facilitator Background Information and Explore! Health in Space Discussion Guide.
    • Prepare the three containers, each with different amounts of beans to model its weight on Earth, on the Moon, or in space.
      • Place three cups of beans into a can and label it "1559 Beans on Earth."
      • Place 1/2 cup of beans into a can and label it "1559 Beans on the Moon."
      • Label the empty can "1559 Beans in Space."
      • Make sure the lids on the containers are on tight or sealed so there can't be any peeking!

There is no reason to have exactly 1,559 beans in each of the “Earth” containers. Placing a specific number on the container label, however, will help the children to realize that even though the weight of an object may change in space, the mass of those objects will remain the same.

The day before the activity

Provide the “Earth,” “Moon,” and “Space” cans and Beans in Space Children's Guide in a bag or bin, or place them at a table so that participants can access them.

Activity

1.  Share ideas and knowledge.

  • Introduce yourself. Help the children learn each other’s names (if they don’t know each other already).
  • Use the Explore! Health in Space Discussion Guide to draw participants into the activity and frame the activity with the main message:  Astronauts — and kids! — need to exercise to stay healthy.

2.  Exercise like an astronaut! Encourage each participant to lift the can labeled “1,559 Beans on the Moon” in one hand and the can labeled “1,559 Beans on Earth” up and down 20 times. Invite them to do the same “workout” with the can labeled “1,559 Beans in Space” compared with the “Earth” can in the other arm.

3.  Compare observations and connect them to the “real world.” Prompt the children to compare their experiences lifting each of the cans with other children and/or family members. Prompt them to connect that experience to what astronauts experience in space.

For older children, emphasize the concept that weight and mass are not the same things. Although mass remains the same in space, weight changes in microgravity. Ask them if they think a can filled with 1,559 dried beans — or anything else — has the same mass on Earth as 1,559 beans in space or on the Moon.

4.  Explain that in space (a microgravity environment), astronauts’ muscles become smaller and weaker (i.e., begin to atrophy). Their muscles don’t have to work hard to lift their bodies or the equipment that the astronauts use — it is like lifting the “Space” can. In space, where there is no gravity for their muscles to pull against, their muscles become weaker. On the Moon, which has about 1/6 the pull of gravity that Earth has, future explorers’ muscles will get a little bit of a workout.  

5.  Conclude. Summarize that astronauts work out almost two hours every day while they are in space and even then, they still lose muscle mass. Kids and adults on Earth also lose muscle mass if we don’t exercise enough! There are many challenges astronauts face as they live and work in space. Daily life in space is different than life on Earth, but in both environments humans have the same basic needs.

(These steps are also described in the Children's Guide.)

Last updated
June 22, 2015


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