People using crutches have their hands occupied, which makes it difficult to …
People using crutches have their hands occupied, which makes it difficult to carry books and other items they want to have handy. Student teams are challenged to design assistive devices that modify crutches to help people carry things such as books and school supplies. Given a list of constraints, including a device weight limit and minimum load capacity, groups brainstorm ideas and then make detailed plans for their best solutions. They create prototypes and then test for functionality by loading them and using them, making improvements with each iteration. At a concluding design expo, teams present their concepts and demonstrate their final prototype devices.
In this activity, students construct adding slide rules, scaled with linear calibrations …
In this activity, students construct adding slide rules, scaled with linear calibrations like ordinary rulers. Students learn to move these scales relative to each other in ways that add and subtract distances, thus calculating sums and differences. This is Activity A1 in the "Far Out Math" educator's guide. Lessons within the guide include activities in which students measure, compare quantities as orders of magnitude, use scientific notation, and develop an understanding of exponents and logarithms using examples from NASA's GLAST mission. These are skills needed to understand the very large and very small quantities characteristic of astronomical observations. Note: In 2008, the GLAST mission was renamed Fermi, for the physicist Enrico Fermi.
To add the vectors (x‰âپ,y‰âپ) and (x‰ââ,y‰ââ), we add the corresponding components …
To add the vectors (x‰âپ,y‰âپ) and (x‰ââ,y‰ââ), we add the corresponding components from each vector: (x‰âپ+x‰ââ,y‰âپ+y‰ââ). Here's a concrete example: the sum of (2,4) and (1,5) is (2+1,4+5), which is (3,9). There's also a nice graphical way to add vectors, and the two ways will always result in the same vector.‰غـ‰غـ
This addition card mat is meant to be set up as a …
This addition card mat is meant to be set up as a center to use during your addition unit. Students will flip over 2 cards and place them in the card spots. They will then use a dry erase marker to write the full addition sentence.
You will need to print the mat and laminate in order to use with dry erase. Alternatively, you could place sheet in a dry erase sleeve.
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