ERIC Number: ED043510
Record Type: Non-Journal
Publication Date: 1970
Reference Count: N/A
[Environmental Education Units.]
Minneapolis Independent School District 275, Minn.
Two of these three pamphlets describe methods of teaching young elementary school children the principles of sampling. Tiles of five colors are added to a tub and children sample these randomly; using the tiles as units for a graph, they draw a representation of the population. Pooling results leads to a more reliable sample. Practice is given in estimating population sizes by a capture-mark-release-recapture technique, first using colored beans, then with marked mealworms. The variation in estimates caused by sampling is indicated. The third pamphlet, for use with children in grades 4-6, depends upon some knowledge of sampling techniques. Its purpose is to introduce children to some possible explanations of biological diversity. Children study themselves and collect data on tongue-rolling ability, estimating its frequency in the population. Then a continuous variable--weight or length of seeds--is studied. Heredity patterns are developed and the idea of selection introduced. Practice in using histograms to record data is included. Each pamphlet contains background information and suggested teaching techniques. This work was prepared under an ESEA Title III contract. (AL)
Publication Type: N/A
Education Level: N/A
Sponsor: Bureau of Elementary and Secondary Education (DHEW/OE), Washington, DC.
Authoring Institution: Minneapolis Independent School District 275, Minn.
Identifiers - Laws, Policies, & Programs: Elementary and Secondary Education Act Title III