Contact information

About Mrs. Mastrian

  • My name is Mrs. Ali Selders and I am the 5th Grade Resource Teacher for Math. I have a bachelor's degree in painting from Tyler School of Art and a master's degree in elementary education. I taught 5th grade at Milton Elementary and spent 4 years teaching in Boulder, Colorado. I am a board member of the Cape Henlopen Education Foundation. I am also the mom of two boys and a beagle named Larry. I love camping, traveling, art and eating!

Classroom Rules

    • Raise your hand to speak
    • One person at a time to the bathroom
    • Please wait for a break to use the bathroom, get a drink etc.
    • Be prepared for class! Bring your pencils, books, materials etc. to class each day
    • Use materials properly: dry erase markers, manipulatives, ipads, etc.
    • Treat others the way you would like to be treated!