Name: [2039] John Posner
Member: 81 months
Authored: 1 videos
Description: Software technical writer in USA. Dabbler in math and computer education for younger kids. ...

BlockHead -- visual calculator for whole numbers [ID:201]

a series of video-tutorials by John Posner

BlockHead is a program that helps you find the answer to 3-digit addition and subtraction problems, by dragging-and-dropping blocks.

The first video in the series covers addition. The second video covers subtraction.

Video Tutorials

1. Adding Numbers with BlockHead

This video introduces BlockHead, showing how it represents numbers as Cuisenaire-like blocks in a place-value framework. It then walks through two examples of adding 3-digit numbers. The first example is straightforward, and includes an example of carrying from one column to the next. The second example shows multiple carries, and demonstrates how BlockHead allows you to process blocks in any ord [...]

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