A recent study suggests: (a) that short practice assignments do improve performance on class tests and (b) that teachers also use homework assignments to accomplish other learning-related objectives. For junior high school students, the positive association with achievement appears for even the most minimal amount of time spent on homework, but disappears after about 90 minutes of homework […]
Our brief introduction to Set Theory (aka Transit of Venus, etc.) leads nicely to a brief discussion of Boolean Algebra. Boolean Algebra, or the algebra of logic, was devised by the English mathematician George Boole (1815-64), and embodies the first successful application of algebraic methods to logic. Boole recognized that the algebraic laws he proposed are […]
Venn Diagrams are pictorial ways of representing interactions among sets to display information that can be read easily. Each set of given information is designated a circle. Interactions between the sets are shown in the circles’ intersections; items common to both sets are found in the intersection whereas other items are found outside the intersection. […]
Here is a cool little website for showing students how to create simple Pictograms (Pictographs – or, simply bar graphs with pictures). What I really like about it is that it allows students to use a picture to represent scale (e.g. 1 sheep in the graph = 100 in the data). It also allows sorting […]
From “How Google Works“:
Explore the elevations of a particular path through the Elevation Profile in Google Earth. To start, either draw a path or open an existing one. Once you’ve chosen a path from the Places panel, there are two ways to see its Elevation profile. Either go to Edit > Show Elevation Profile, or right-click on your path from the Places panel […]
We have been posting about directions which brings us to a rather different idea. John Cleese (see his website here) was hilarious in the Monty Python’s “Ministry of Silly Walks” (click on image to link to the video at YouTube) but, to the young growing mathematician, such fun has a more serious site. The diagram […]
The header image of the canoe poses an interesting question – which direction is it going in? See Diary for discussion and answer.
