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Grade 2 Science

Core Unit:Weather

Unit overview:

In this unit students continue developing their skills in observing and recording information. They examine weather information for trends and patterns. Seasonal changes in the weather are important to consider. Observations that the students make should be at different times of the year. Thus, one way of developing this unit would be to stagger it throughout different times of the school year.

The unit also considers the effects of weather. By examining these effects, be they desirable or otherwise, students should be able to gain an appreciation of the importance of understanding weather. Students will also consider why weather is so important to agriculture.

Related units:

In grade 1 students learn about the planet Earth. The Optional Unit on The Sky is also closely connected. These units provide additional support for the study of weather.

The grade 2 Core Unit on Plant Growth is closely related, since weather patterns have an important effect on plant growth. The Optional Unit on Air and Water is also related.

In grade 4, students go on to make predictions about the weather in the unit dealing with Predicting Weather. Thus, the grade 2 unit on weather should enable students to develop the preparatory skills of observing and recording which will be needed to make predictions.

The grade 6 Unit on the Earth's Climate is also related. After considering local weather patterns in grades 2 and 4, students go on to examining climatic trends on a global scale.

Suggested themes:

change, historical and modern clothing, how weather affects agriculture, how weather affects our daily lives, kinds of precipitation, patterns, seasons, storms, warm and cold

Factors of scientific literacy which should be emphasized:

Common Essential Learnings foundational objectives which should be emphasized:

To use a wide range of possibilities for developing the student's knowledge of the major concepts within science. (COM)

To strengthen the student's understanding of weather through applying their knowledge of numbers and their interrelationships. (NUM)

Science foundational and learning objectives:

  1. Observe and record data.
    1. Use a thermometer to measure air temperature.
    2. Observe and record cloud patterns.
    3. Take weather measurements.
    4. Construct an instrument for obtaining measurements and collecting data about weather.
  2. Describe weather.
    1. Describe weather changes that occur from day to day.
    2. Describe weather changes that occur with the seasons.
  3. Explain the effects of weather.
    1. Illustrate how living things adapt to the seasonal changes of the weather.
    2. Investigate the relationship between cloud formations and weather.
    3. Suggest why understanding weather is important.
    4. Describe some effects of weather on agriculture.
    5. Show how weather affects our daily lives.

Suggested Activities :

  1. Place thermometers in five or six locations in the room. (One could extend this to place the thermometers in different rooms in the school.) Possible locations are above a window, on a window sill, high on a wall opposite the windows, low on a wall near a window, low on a wall beside a door, near a heating duct, and so on. Take readings at each location every hour during the school day, and graph the daily results Continue this for several days. On the same graph record the outdoor temperature. Is there a pattern to the variations in temperature? What might one infer from the data? What could one predict from the data? The activity could be repeated several times throughout the year to provide an opportunity for students to consider energy issues related to weather.

    On the graph, use a different colour to represent each location where temperature readings were taken. The colour could coincide with a colour patch of construction paper located where the measurements are taken.

    Factors: B1, B8, C3, C5, C7, E3, F3, G1

    Objectives: 1.1, 1.3, 2.1

    Assessment Techniques: 3, 4, 5, 8, 9

    Common Essential Learnings: Numeracy. Recognize situations in which it is important to make measurements and record the data collected. Graphing the information makes it easier to identify emerging trends.

  2. Collect weather maps or weather information from a daily newspaper. Distribute copies to the students, or post the information each day. Each group within the class could be given the task of recording the maximum and minimum temperatures and the precipitation of a selected location for a month, and then preparing a graph of that data for posting on the bulletin board. Select locations which are in different regions throughout Canada in order to give students a broader perspective of national weather trends.

    On the graph, use a different colour to represent each location where temperature readings were taken. The colour could coincide with a colour patch of construction paper located where the measurements are taken.

    As the activity progresses, make sure that students rotate responsibilities for the various tasks, so that each of them has an opportunity to participate fully.

    Factors: B1, B8, C2, C7, E4, F3, G1

    Objectives: 2.1

    Assessment Techniques: 1, 3, 4, 5, 6, 9

    Common Essential Learnings: Numeracy. Recognize situations in which it is important to make measurements and record the data collected. Graphing the information makes it easier to identify emerging trends.

  3. Observe and record weather conditions at a particular time each day for an extended period of time. Summarize the data on a large wall chart. The chart could include written descriptions of the conditions, symbolic representations, and measurements. Students could try making predictions by having their own prediction journals or by having a class prediction chart posted in the classroom. Environment Canada's predictions could be posted in order to make comparisons with both the observed conditions and with students' predictions.

    Factors: B1, B5, B8, C2, C3, C5, C7, E2, F3, G1

    Objectives: 1.1, 1.2, 1.3, 2.1, 3.2

    Assessment Techniques: 4, 5, 8, 9

    Common Essential Learnings: Numeracy. Students collect and organize quantitative information. They summarize that information into a chart and interpret the information on the chart. Emphasis should be placed on making careful observations and recording them in order to facilitate sharing of the information. Once the results are posted they could be discussed. Recording results accurately assists in making predictions.

  4. This activity illustrates the need to use measuring devices, rather than the use of our senses, to record information about weather. Show that temperature perception is a relative phenomenon. Prepare three cups of water. The first should have ice cubes in it. The second should be at room temperature. The third should be quite warm, perhaps at 40 °C. Take temperature readings in each cup. Have a student place one finger of one hand into the hot water, and a finger of the other hand into ice water. After about thirty seconds, the fingers which have been immersed in the hot and cold water should be moved quickly into the cup containing water at room temperature. Have another student try the same thing. Compare the sensations.

    As an extension, questions like the following could be posed:

    On some days in Saskatchewan, March 10 perhaps, +5 °C would seem warm but on other days, July 16 for instance, +5 °C would seem cool. Why?

    Does 0 °C mean that there is no heat? When can 0 °C seem warm?

    Why is it better to use a thermometer for measuring temperatures rather than having people stand outside? (Differences in perception would lead to a lack of consistency in the results. What might seem cold to one person would feel warm to another, depending on how they were dressed and how they have acclimatized to a particular set of conditions.)

    Factors: B2, B5, C3, E4, F3

    Objectives: 1.1, 1.4, 3.1, 3.3

    Assessment Techniques: 3, 5, 8

    Common Essential Learnings: Technological Literacy. Students should be able to develop an appreciation of the benefits and limitations of technological tools for measuring weather. Thermometers, barometers, anemometers, and many other types of weather instruments make it possible to record information with some precision. Without these tools humans would be at a disadvantage. However, the tools do not always allow us to predict weather accurately.

  5. Build models of two houses from a shoe box. Use tempera paint or black construction paper to make the lid of one of the boxes black. On the second box, remove the lid and use a sheet of aluminum foil to represent the roof. Insert a thermometer through the wall of each box at the midpoint from each end. Set each box in the sun, or place them under a sunlamp, and record the interior temperatures every five minutes for a half-hour. Are there any trends which can be identified in the temperatures? What analogy can be made to natural and to human- created environments?

    If a third box having a transparent lid was used in a subsequent activity, this could lead to a follow-up on the Greenhouse Effect, and the use of solar collectors.

    Factors: A3, B1, B2, C3, C5, E3, G1

    Objectives: 1.1, 1.4, 3.3

    Assessment Techniques: 3, 5, 8, 9

    Common Essential Learnings: Technological Literacy. The model can be used to assess the effectiveness of technological developments such as passive solar heating, greenhouses, etc.

  6. Groups of 3 or 4 students could be provided with an opportunity to make a device which would answer the following three questions:

    • How can you tell the wind is blowing?
    • How can we tell from which direction the wind is blowing?
    • How can we tell how fast the wind is blowing?
    The groups might come up with different solutions to the problem. For example, one group might decide to throw a paper cup straight up into the air. The direction that it travels, and the position that it lands will tell something about the questions that have been posed.

    Another group might decide to hold a long paper streamer straight up in the air. The direction that it points, and the angle at which it points might help to answer the questions. Other groups might come up with different solutions.

    Factors: A3, B1, B2, B5, C2, C3, C4, C5, E2, E3, G1

    Objectives: 1.3, 1.4

    Assessment Techniques: 2, 4, 5, 8, 9

    Common Essential Learnings: Independent Learning. The activity provides students with an opportunity to solve problems in groups. They strengthen their perceptual abilities through concrete experiences. They also discover meanings and solutions for themselves through active participation in learning activities and experiences.

  7. Have students look through newspapers or magazines for several weeks to find articles and pictures which show how weather affects people's lives. Newspapers frequently have articles relating weather and agriculture. They could begin a scrap book on these themes. Gather additional display materials from your school library's picture file and magazine collection. Included could be pictures showing seasonal sports and recreational activities, as well as people wearing different clothing depending on the weather conditions. Seasonal agricultural activities could be added.

    Activities which integrate Science with other Required Areas of Study are desirable. Students could write a poem about weather, sing a related song, draw pictures showing cloud patterns or different weather conditions, or use drama to show how one might feel in certain types of weather conditions. This could be expanded to provide opportunities for making cross-cultural comparisons.

    Some teachers might find that long-term activities may be disappointing for students, depending upon the students in the class. If that is the case, short-term activities will prove to be more successful. Activities can be limited in duration to one day a week, or to a maximum of several days, if it would be more appropriate to organize them in this way for a particular group of learners.

    Factors: A3, B1, B2, B5, C2, C3, E4, F3, G1

    Objectives: 2.1, 2.2, 3.3

    Assessment Techniques: 1, 2, 3, 4, 5, 6, 7, 8, 9

    Common Essential Learnings: Communication. Students express their understandings in a variety of ways. This activity, as well as its related connections into other subject areas, allows students to participate in a wide range of experiences which involve science as a way of knowing. Activities which relate Science to other subject areas may serve to reduce the anxieties that some older students develop.

  8. At the beginning of the new school year, record information about trees or other plants located near the school. Students should determine what information should be recorded. Have the students visit the sites at least twice more, during winter, then in late spring. Each time have them record the information. At the end of the second and third visit they can compare the changes that took place.

    For this activity it would be interesting to take a photograph of the class and the objects they are observing. The students would then have graphic evidence that they and the plants have changed with the seasons. The students will have grown, and they will be dressed differently. Changes in plant life can be compared. Have the students write about their experiences on the visits.

    Factors: A3, B1, B2, C3, E2, E4, G1,

    Objectives: 2.2, 3.1, 3.3

    Assessment Techniques: 4, 5, 6, 8, 9

    Common Essential Learnings: Communication. Students engage in learning in this activity by utilizing first-hand experiences to better understand the concept under study. They record, discuss, and write about their observations using their own language.

  9. Set up an ant colony in the classroom. Two thick panes of glass, sealed about 8 cm apart in a wooden frame, can be used to form the frame into which soil and an existing ant colony is poured. Have students observe the ants every day. If they notice anything different about how the ants are behaving on a particular day, have them record this. They should also be taking and recording detailed weather measurements on a daily basis. They should watch for correlations (if any) between these two sets of data. Combine this with other activities suggested previously.

    Factors: A3, B1, B2, B5, B8, C2, C3, C5, C7, E2, F3, G1,

    Objectives: 1.3, 2.1, 3.1

    Assessment Techniques: 1, 3, 4, 5, 8, 9

    Common Essential Learnings: Numeracy, Critical and Creative Thinking. This is pure scientific research in action. Scientists are still learning how animal behaviour is affected by changes in the weather. An activity such as this allows students to participate in science like scientists.

    Encourage students to view the ant colony for themselves. If they learn to think like scientists, they can begin to search for patterns in the ant behaviour. In research carried out by scientists, there is not necessarily a right or wrong answer to some of the types of questions being investigated. As scientists gather more information from experiments and from careful observation, they help us understand our world in ways that were not possible before.

    There are no right answers here, and sometimes things might not be as simple as they might seem. Complex interactions might be affecting the ant behaviour. Have students measure and record as many things as they can think of -- barometric pressure, temperature, cloud patterns and formations, wind direction and speed, amount of sunlight, and so on. Some of these factors might be influencing the ant behaviour.

    (Other factors which are not part of the experiment may be affecting the results, such as the amount of noise in the classroom, the amount of vibration of the ant colony, the amount of moisture in the soil, the food supply of the ants, or even something like the signals being broadcast by the local radio station! Who knows! The experiment suggests a relationship between weather conditions and the behaviour of ants in an ant colony. A causal relationship may or may not exist between the two things.)

  10. Build a variety of instruments to take weather measurements. A simple barometer may be made by stretching a plastic membrane from a surgical glove over a wide rimmed jar and holding it in place with an elastic band. A long straw can be glued to the centre of the membrane. The end of the straw acts as a pointer. Slight changes in the position of the pointer indicate changes in barometric pressure. As the end of the straw moves upward, it indicates that the atmospheric pressure is increasing.

    Various devices can be used to measure wind speed and direction. Weather vanes, wind socks, pinwheels, anemometers, and streamers can be designed to do these things.

    An empty cylindrical plastic container can serve as a rain gauge. A ruler can be used as a snow gauge.

    An outdoor weather station, located near the school, would be an interesting project to build and monitor throughout the year. Keep the weather records collected from year to year. Students can then compare weather readings with ones taken by students in previous years. Long- range trends might become evident after a number of years.

    Factors: A3, B1, B2, B5, B8, C2, C3, C4, C5, C7, E2, E3, E5, F3, G1

    Objectives: 1.1, 1.2, 1.3, 1.4, 2.1, 2.2, 3.2, 3.3

    Assessment Techniques: 1, 2, 3, 4, 5, 6, 7, 8, 9

    Common Essential Learnings: Numeracy, Critical and Creative Thinking. In this activity, students make careful observations and share those observations with others.

    An interesting extension of this project would be to establish a twinning site somewhere else in the world, or even elsewhere in Saskatchewan, where students have set up a similar weather station. Once a week a summary of the weekly weather information, as well as special messages from the members of one class to another, can be sent to the other students by means of a computer and a modem, or by mail. Interesting comparisons of weather in some other place in the world could be made. The students may also benefit from learning a variety of other things through a cross-cultural experience. Students may cooperate with other people from some other place in the world. They develop an understanding of people from other places, and perhaps even from other cultures. Some students may even set up pen pal relationships.

    Note: For more information about weather, you may order Learning Weather from the Department of Supply and Services, Canadian Government Publication Centre, Ottawa. The kit is designed for the Middle Level, although it can provide some useful ideas for Elementary Level teachers.

    Other information can be obtained by contacting Environment Canada's Atmospheric Environment Service.

  11. Invite grandparents or others to the classroom to describe life on the prairies and how it has been influenced by weather. The students could interview other people about this as well. Written accounts of early life on the prairies could also be read to the class.

    Factors: A3, B1, B5, C2, C3, G1

    Objectives: 2.1, 2.2, 3.1, 3.3

    Assessment Techniques: 1, 3, 5, 9

    Common Essential Learnings: Personal and Social Values and Skills. By having grandparents or other people describe how life on the prairies has been influenced by the weather, students will begin to empathise with some of the hardships that were experienced. They can also gain a better appreciation of how strongly the weather influences agriculture and life on the prairies.

  12. If students have grandparents who live in a different place, obtain parental permission to have those students correspond with their grandparents to compare weather patterns in the two locations. Have the students prepare a month-long calendar which they can send to their grandparents. They should also indicate the information that they would like their grandparents to record daily on the calendars. During the month the students can make duplicate copies of the calendars. After the students get the calendars from their grandparents, they can compare to see what the weather was like in different places on similar days.

    Factors: B1, B5, B8, C2, C3, C4, C5, C7, E2, E4, F3, G1

    Objectives: 1.1, 1.2, 1.3, 2.1, 3.3

    Assessment Techniques: 2, 3, 4, 5, 6, 8, 9

    Common Essential Learnings: Personal and Social Values and Skills. The activity may help to maintain close ties between children and grandparents who live far away.

    Obtaining parental permission is important, because there may be some reasons why communication between their children and the grandparents has been severed.

  13. A poster depicting the six seasons of the Woodland Cree is available from the La Ronge Indian Band. The two additional seasons are spring breakup and fall freezeup. Discuss why those two times of the year might be particularly significant. Relate this to spring seeding and fall harvesting.

    Indian names of the months relate to animal and plant activities throughout the calendar year. Consider some of those activities to see how the months have been named. For example, consider seasonal changes that coincide with animal migrations.

    Factors: B1, B2, B5, C2, G1

    Objectives: 2.2, 3.1, 3.3

    Assessment Techniques: 1, 3, 5

    Common Essential Learnings: Critical and Creative Thinking. By considering seasonal changes from the Woodland Cree perspective, students gain an awareness that certain notions in science, such as the idea that there are four seasons, are culturally based.

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