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2. GeoGebra - Wikipedia

   en.wikipedia.org/wiki/GeoGebra

   GeoGebra (a portmanteau of geometry and algebra) is an interactive geometry, algebra, statistics and calculus application, intended for learning and teaching mathematics and science from primary school to university level. GeoGebra is available on multiple platforms, with apps for desktops (Windows, macOS and Linux), tablets (Android, iPad and ...

3. Manipulative (mathematics education) - Wikipedia

   en.wikipedia.org/wiki/Manipulative_(mathematics...

   Manipulative (mathematics education) In mathematics education, a manipulative is an object which is designed so that a learner can perceive some mathematical concept by manipulating it, hence its name. The use of manipulatives provides a way for children to learn concepts through developmentally appropriate hands-on experience.

4. Exchange rate - Wikipedia

   en.wikipedia.org/wiki/Exchange_rate

   The key currency generally refers to a world currency, which is widely used for pricing, settlement, reserve currency, freely convertible, and internationally accepted currency. Cross rate: After the basic exchange rate is worked out, the exchange rate of the local currency against other foreign currencies can be calculated through the basic ...

5. Windows Calculator - Wikipedia

   en.wikipedia.org/wiki/Windows_Calculator

   A simple arithmetic calculator was first included with Windows 1.0. [5]In Windows 3.0, a scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, statistical functions such as single variable statistics and linear regression.

6. Currency appreciation and depreciation - Wikipedia

   en.wikipedia.org/wiki/Currency_appreciation_and...

   Currency appreciation and depreciation. Currency depreciation is the loss of value of a country's currency with respect to one or more foreign reference currencies, typically in a floating exchange rate system in which no official currency value is maintained. Currency appreciation in the same context is an increase in the value of the currency.

7. United States dollar - Wikipedia

   en.wikipedia.org/wiki/United_States_dollar

   This is an accepted version of this page This is the latest accepted revision, reviewed on 28 September 2024. Currency of the United States "USD" redirects here. For other uses, see USD (disambiguation). United States dollar Federal Reserve Notes (obverse) ISO 4217 Code USD (numeric: 840) Subunit 0.01 Unit Symbol $, US$, U$ ‎ Nickname List Ace, bean, bill, bone, buck, deuce, dough, dub ...

8. World currency - Wikipedia

   en.wikipedia.org/wiki/World_currency

   World currency. The US dollar (top) and the euro are by far the most used currencies in terms of global reserves. In international finance, a world currency, supranational currency, or global currency is a currency that would be transacted internationally, with no set borders.

9. XE.com - Wikipedia

   en.wikipedia.org/wiki/XE.com

   Xe.com (Xe) is a Canada-based online foreign exchange tools and services company headquartered in Newmarket, Ontario. It is best known for its online currency converter application that offers exchange rate information, international money transfers, and other currency-related services via its website, mobile apps, and other online channels.