三角形的面积是底乘以高乘以1/2。如果没有垂直高度，则使用另一个公式：1/2abSinC，会在视频中学习到。 访问我们的网站 www.fuseschool.org，我们的视频都按照主题编排，并了解我们其他的内容。评论、点赞并与其他学习者分享。你既可以提问也可以回答问题，老师会回复你。 这些视频可以在翻转的课堂模型中使用，也可以作为修改辅助文件使用。 点击这里查看更多视频：https://alugha.com/FuseSchool Twitter：https://twitter.com/fuseSchool 在 fuseSchool 平台和应用程序中获取更深层次的学习体验：www.fuseschool.org 此开放式教育资源在知识共享许可协议下免费使用：署名-非商业性 CC BY-NC（查看许可证契约：http://creativecommons.org/licenses/by-nc/4.0/）。你可以下载视频用于非营利性的教育用途。如果你想修改视频，请联系我们：info@fuseschool.org
All living organisms are made up of cells - they are the basic building blocks of life. There are two important categories of cells: plant cells and animal cells. In this video we look at animal cells in more detail. Animal cells are the type of cell that make up our bodies... and the bodies of al
Learn the basics about carbon neutral and biofuels, as a part of environmental chemistry. Coal, oil, natural gas, shale gas and gas from fracking are fossil fuels formed hundreds of millions of years ago from living things that got trapped by layers of sediment before they had time to decompose. H
The way we grow and develop in the womb is controlled by our DNA. Small sections of DNA, called genes, carry the code telling the body how to build itself. Usually this works fine, but sometimes those genes carry mistakes in their code. These mistakes, known as mutations, may have no effect, they ma
