The following links to an updated eexample containing the two activities from the original applets.
A major learning goal for students in the primary grades is to develop
an understanding of properties of, and relationships among, numbers.
Building on students' intuitive understandings of patterns and number
relationships, teachers can further the development of number concepts
and logical reasoning as described in the Number and Operations and Reasoning and Proof Standards.

Learning about Number Relationships (4.5)
Students can find and create up to four number patterns in
this twopart eexample by using a calculator or by shading in values in
rectangular grids up to a value of 100.

The twopart example below contains the original applets which conform more closely to the pointers in the book.
Virtual hundred
boards and calculators furnish a visual way of highlighting and
displaying various patterns and relationships among numbers. Using
calculators and hundred boards together, teachers can encourage students
to communicate their thinking with others, as discussed in the
Communication Standard.

Displaying Number Patterns (4.5.1) The same patterns are displayed on a calculator and on a hundred board
simultaneously. 

Patterns to 100 and Beyond (4.5.2) Students examine number patterns, using a calculator to move beyond 100. 