Skip to main content

Home/ HS Math/ Group items tagged 2-3

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
ascordo

Thinkfinity Advanced Search - 0 views

www.thinkfinitysearch.org/...Advanced_Search.asp

reference resources search

shared by ascordo on 15 Jan 08 - Cached
  • Limit Subjects to: All Arts Economics Foreign Language Geography Language Arts Mathematics Philosophy & Religion Science Social Studies   Limit Search by Thinkfinity Partner: All ARTSEDGE - John F. Kennedy Center for the Performing Arts EconEdLink - National Council on Economic Education EDSITEment - National Endowment for the Humanities Illuminations - The National Council of Teachers of Mathematics ReadWriteThink - International Reading Association and the National Council of Teachers of English Science NetLinks - American Association for the Advancement of Science Xpeditions - National Geographic Society   Limit Grade Level to: All K 1 2 3 4 5 6 7 8 9 10 11 onclic
Mansel Wells

Illuminations: Mars Earth Orbit - Model - 0 views

illuminations.nctm.org/ActivityDetail.aspx

shared by Mansel Wells on 21 Nov 09 - Cached
  • Mansel Wells on 21 Nov 09
     
    This model uses circular orbits to approximate the paths of Mars and Earth. It uses 3:2 as the ratio of their orbital radii (the actual is about 1.524:1), and it uses a ratio of 2:1 as the ratio of the time it takes them to complete one revolution about the sun (the actual is about 1.881:1). It also assumes that the orbits of both planets are circular with the Sun as the center, although this is not the case; in actuality, the orbits are ellipses, and the Sun is one of the foci. However, these approximations are close to the actual data, and they allow for the development of a polar equation (5 ‑ 4cosθ) that produces a perfect limaçon. A representation that uses a better approximation of the actual data will not result in such a nice curve.
Mansel Wells

Illuminations: Activities - 0 views

illuminations.nctm.org/ActivitySearch.aspx

shared by Mansel Wells on 21 Nov 09 - Cached
  • Mansel Wells on 21 Nov 09
     
    Illuminations has 104 online activities available. Select which types of activities you're looking for, and click Search to search by K-2, 3-5, 6-8 or 9112
cslo cold

Education Week: Solving Algebra on Smartphones - 0 views

www.edweek.org/...26smartphones.h29.html

2-3 inCOLD

shared by cslo cold on 08 Oct 10 - No Cached
  • cslo cold on 08 Oct 10
     
    "Research shows that a project to use the devices as teaching tools in some N.C. districts has had a measurable impact on student achievement in math."
1 - 4 of 4
Showing 20▼ items per page