Kulish, Mykola

Presents real-world problems that provide students in grades four through seven with strategies for handling everyday situations involving time, ratios, formulas,and geometric shapes.

Presents real-world problems that provide students in grades four through seven with strategies for developing algebraic thinking, covering variables, basic function tables, basic operations, balanced number sentences, variable isolation, and other topics.

Covers how to manipulate and convert numerators and denominators into simplest terms and like terms by calculating common multiples, greatest common factors and least common denominators. Explores how fractions can be renamed into equivalent forms as well as how to order and compare fractional amounts. Also learn how to perform basic operations like subtraction and division on fractions using a variety of strategies and shortcuts.

Presents an introduction to the periodic table of elements, showing how hundreds of different elements are arranged in groups and explaining the underlying patterns that give the chemical world meaning.

Presents an introduction to the periodic table of elements, showing how the underlying atomic structure connects elements with similar properties.

Presents an introduction to the periodic table of the elements, showing how hundreds of different elements combine to form compounds that make up the world around us.

Chronicles the history of the periodic table, discussing the development of the concept of an "element," introducing some of the scientists who recognized patterns in the behavior of chemicals, and considering the contributions of Dmitri Mendeleyev to the creation of the first periodic table.

Presents an introduction to the periodic table of elements, showing how scientits Thomson and Rutherford discovered subatomic particles and development concepts of nuclear theory.

A child narrator explains the history and significance of America's symbols, including the Statue of Liberty, the Liberty Bell, Constitution Hall, the Bald Eagle, Washington D.C. and its monuments, and documents such as the Declaration of Independence and the Constitution.