怎样进行庭院种植英文版.ppt

800-476-6861 | /connectingkidsCopyright ?2012 by SEDL. All rights reserved. 800-476-6861 | /connectingkidsCopyright ?2012 by SEDL. All rights reserved. 800-476-6861 | /connectingkidsCopyright ? 2012 by SEDL. All rights reserved. Student Example: Planting a Garden By The Connected Kids Problem We wanted to plant a garden at school. The principal gave us an area like this for the project. (Measures of the sides are in meters.) * The Problem With Weeds One of the first things we needed to do was to get rid of all of the weeds before planting. Questions: What should we use to get rid of the weeds? How much of this material will we need? * Photo: ? SEDL. Weed Control * Photos: ? SEDL. Weed Control * Photos: ? SEDL. Weed Control Pros Cons * Experiment to Find the Best *  Experiment to Find the Best Questions: How much will we need? Landscape fabric Burlap Newspaper *  Determining Necessary Information We must subdivide the plot into four smaller plots. Also, to determine the amount of each material that is needed, we must determine the area ofeach subdivision. * Determining Necessary Information * Determining Necessary Information * One Possible Subdivision:Step 1 * One Possible Subdivision:Step 2 * One Possible Subdivision:Step 3 *  Experiment to Find the Best Procedure: 1. Cover three areas each with one method of weed control. 2. Plant the same vegetables in the three areas. 3. Leave one area untouched; this area is our control. 4. Water once a week. 5. Once a week, take pictures and count weeds. 6. Log the results in the lab log. * To Be Continued Water the garden as needed. Once a week: Log the observations. Take pictures to document the observations. After 3 months, report the results and develop a conclusion from the weed-control experiment. * * * * * * * * There are several ways to subdivide the garden plot into four smaller rectangles. This is one approach. Begin by drawing