Lesson Description:
Make Tens is a great math integration activity for students that
are beginning their study of place value, especially groups of ten.
The students learn to use the graphic tools to quickly make their
own personal set of 10. Then they learn to duplicate their sets
and make 20, 30, 40 and so on. This is a fast activity and can be
repeated during a typical computer class with different numbers.
Example below.
Extensions:
- You can expand it to include other numbers besides the "tens".
then can circle any number with the brush tool. For example, circle
26 out of a set of 40.
- You can do the same activity with students learning to skip
count by twos, threes, etc.
- You can add text labels to the numerals and sets.
- You can add different sets together.
Implementation Steps:
Teach the graphics skills:
Assemble the class at a large computer display and show how to
create a small shape with the ellipse or rectangle tool. The shapes
need to be small so you will have room to make lots of sets of tens.
If the students mouse skills are not well developed you can just
use larger shapes and do only one number assignment per page.
Introduce the use of the selection rectangle or lasso and show
how once selected the shape can be moved. Then show how when using
Command D (CTRL D Windows) the shape is duplicated. Create a set
of 10. Then select the whole set and duplicate it. They now have
the skills needed to complete the activity. Practice on the graphics
skills will occur in the activity.
Student work:
Have the students go to their own computer and create the first
shape with their own choice of colors. Watch for shapes that are
too big to work for this activity. Then have them duplicate it until
there is a set. Then give the assignment numbers for each quadrant.
Have them use the Brush to mark each quadrant on the page with the
assigned number. Have the students use different colors for each
number assigned. It will help associate the numeral with the graphic
representation. They can use the Fill tool to change the color of
the sets so they do no have to start over on each assigned number.
See the example in the Resources section below.
Preparation Notes:
The Teacher may want to create a template document that has been
divided for the students into fourths. There are two graphic files
that can be used in the Canvastic backgrounds folder. If not, the
students can create their own divisions with the Brush tool.
Student Prerequisites:
Students need to know how to use the Brush and Fill tool and how
to select colors for both of those tools.
Assessment:
Assessment is most easily done while the activity is going on while
looking over the students' shoulders. Giving feedback along the
way makes it an interactive instructional activity. If you withhold
help it could be used as an assessment of their knowledge of this
math skill.
Resources:
Background graphic files: quadrants 1 and quadrants 2
Example
Standards Addressed:
ISTE NETS Technology Standards: Grades Pre-K-2 Performance indicator(s):
1. Use input devices (e.g., mouse, keyboard, remote control) and
output devices (e.g., monitor, printer) to successfully operate
computers, VCRs, audiotapes, and other technologies. (1)
8. Create developmentally appropriate multimedia products with
support from teachers, family members, or student partners.
NCTM - National Council of Teachers of Mathematics - Standards:
Number and Operations Standard for Grades Pre-K–2
Understand numbers, ways of representing numbers, relationships
among numbers, and number systems
- count with understanding and recognize "how many"
in sets of objects;
- use multiple models to develop initial understandings of place
value and the base-ten number system;
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