The CTXL series of universal circular chart recorders ... thermocouple–input chart recorder that accepts J, K, or T typethermocouple probes, while the CTXL-DPR accommodates dual process inputs of 0to ...

We investigate the impact of using concrete objects (like bundling straws into groups of 10). We also investigate the use of visual tools, such as number lines and charts, or words to represent ...