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  2. Homepage | PLTW

    www.pltw.org

    Reinventing the Classroom Experience Project Lead The Way provides transformative learning experiences for PreK-12 students and teachers across the U.S. We create an engaging, hands-on classroom environment and empower students to develop in-demand knowledge and skills they need to thrive.

  3. Empty string - Wikipedia

    en.wikipedia.org/wiki/Empty_string

    Formal theory. Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. The empty string is the special case where the sequence has length zero, so there are no symbols in the string.