<body><script type="text/javascript"> function setAttributeOnload(object, attribute, val) { if(window.addEventListener) { window.addEventListener('load', function(){ object[attribute] = val; }, false); } else { window.attachEvent('onload', function(){ object[attribute] = val; }); } } </script> <div id="navbar-iframe-container"></div> <script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script> <script type="text/javascript"> gapi.load("gapi.iframes:gapi.iframes.style.bubble", function() { if (gapi.iframes && gapi.iframes.getContext) { gapi.iframes.getContext().openChild({ url: 'https://www.blogger.com/navbar.g?targetBlogID\x3d14085375\x26blogName\x3dPre-Cal+20S\x26publishMode\x3dPUBLISH_MODE_BLOGSPOT\x26navbarType\x3dBLUE\x26layoutType\x3dCLASSIC\x26searchRoot\x3dhttps://pc20s.blogspot.com/search\x26blogLocale\x3den_US\x26v\x3d2\x26homepageUrl\x3dhttp://pc20s.blogspot.com/\x26vt\x3d563388513742822071', where: document.getElementById("navbar-iframe-container"), id: "navbar-iframe" }); } }); </script>

Monday, December 05, 2005

Blog Before Test

A muddy point of mine was deciding when to cross multiply. Maybe, we could put a rule for when to cross multiplication. Just today, we when over when to use cross multiplication. ONLY use the cross multiplying rule when solve an equivalent fraction equation.

I thought the weekend homework, Exercise 52 was tough. I when to talk to Mr. K. After, a long while of conferencing, I learned when and how to cross multiply properly. After, the meeting I had a better feeling. I felt better, but still a little worried.

Today, Mr. K told my a funny story of how the "Pythagorean theorem." On exercise 52, question 12, it says "John is building a house 20-m by 10-m but he lost his carpenter square. How can he make sure his house found is at right angles without buying another square?" A carpenter square is a triangles that is 3 by 4 by 5. Which is 3² by 4² by 5². Which equals to 9 + 16 = 25. The conclusion is that home builder's use the "Pythagorean theorem" in real life.


Post a Comment

<< Home