Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Real Number Operations01:27

Real Number Operations

203
The concept of real numbers includes all the values that can be represented on a continuous number line. The system began with basic counting values used for enumeration. It later expanded to include values that represent the absence of quantity and opposites of the counting values. When situations required expressing parts of a whole or dividing quantities evenly, values capable of representing such proportions were developed. When written using decimal notation, these values can end or repeat...
203
Numerical Calculations01:24

Numerical Calculations

1.1K
In engineering applications, the representation of the numerical value is critical. Presenting or reporting the answer is one of the essential parts of engineering practices. Numerical calculations are performed using handheld calculators or computers since numerically accurate answers are always preferred.
The solution to a problem is obtained using different methods. While manually solving algebraic symbols is one of the most common methods, the graphical method is often preferred. Computers...
1.1K
Significant Figures in Calculations00:58

Significant Figures in Calculations

16.2K
Uncertainty in measurements can be avoided by reporting the results of a calculation with the correct number of significant figures. This can be determined by the following rules for rounding numbers:
16.2K
Estimation of the Physical Quantities01:05

Estimation of the Physical Quantities

7.1K
On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
7.1K
Uncertainty in Measurement: Significant Figures03:34

Uncertainty in Measurement: Significant Figures

79.4K
All the digits in a measurement, including the uncertain last digit, are called significant figures or significant digits. Note that zero may be a measured value; for example, if a scale that shows weight to the nearest pound reads “140,” then the 1 (hundreds), 4 (tens), and 0 (ones) are all significant (measured) values.
79.4K
Orders of Magnitude01:15

Orders of Magnitude

26.0K
The order of magnitude of a number is the power of 10 that most closely approximates it. Thus, the order of magnitude estimates the scale (or size) of its value. To find the order of magnitude of a number, take the base-10 logarithm of the number and round it to the nearest integer. Then the order of magnitude of the number is simply the resulting power of 10.
The order of magnitude is simply a way of rounding numbers consistently to the nearest power of 10. This makes doing rough mental math...
26.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Rethinking the Origins of Cross-Language Effects: How Heard Verbs Influence Japanese- and English-Speaking Children's Attention to the Details of Actions.

Developmental science·2026
Same author

The world through infant eyes: Evidence for the early emergence of the cardinal orientation bias.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

An edge-simplicity bias in the visual input to young infants.

Science advances·2024
Same author

Can lessons from infants solve the problems of data-greedy AI?

Nature·2024
Same author

Infant vocal productions coincide with body movements.

Developmental science·2024
Same author

Look before you reach: Fixation-reach latencies predict reaching kinematics in toddlers.

Infancy : the official journal of the International Society on Infant Studies·2023
Same journal

Timing and type of domestic violence exposure and adolescents' experiences of peer violence.

Child development·2026
Same journal

Comprehension of "can" predicts performance on a nonverbal measure of modal concepts at 48 but not 36 months.

Child development·2026
Same journal

An associative learning account of how saliva becomes a cue for comfort.

Child development·2026
Same journal

If moms do it, it can't be that important: Children's reasoning about gender disparities in domestic work.

Child development·2026
Same journal

Adapting under stress: How sociocultural stress intensity and fluctuation shape youth school engagement and internalizing symptoms.

Child development·2026
Same journal

Children across diverse societies exchange reasons to resolve disagreements.

Child development·2026
See all related articles

Related Experiment Video

Updated: Jan 5, 2026

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA
10:58

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

Published on: August 28, 2021

4.9K

Number Representations Drive Number-Line Estimates.

Lei Yuan1, Richard Prather2, Kelly S Mix2

  • 1Indiana University.

Child Development
|October 29, 2019
PubMed
Summary
This summary is machine-generated.

Children

More Related Videos

Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

5.5K
Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
14:43

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish

Published on: July 18, 2020

8.5K

Related Experiment Videos

Last Updated: Jan 5, 2026

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA
10:58

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

Published on: August 28, 2021

4.9K
Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

5.5K
Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
14:43

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish

Published on: July 18, 2020

8.5K

Area of Science:

  • Cognitive Development
  • Educational Psychology
  • Numerical Cognition

Background:

  • The number-line task is a common tool for assessing children's numerical representation.
  • Proportional reasoning may better explain performance on this task than previously thought.

Purpose of the Study:

  • To investigate how different formats of number representation affect children's performance on number-line tasks.
  • To explore the relationship between task format, counting skills, and numerical representation in young children.

Main Methods:

  • Ninety 4- to 6-year-old children completed a number-line task using symbolic numbers, clustered dot arrays, or spread-out dot arrays.
  • Performance was analyzed in relation to task format and counting ability.

Main Results:

  • Children performed significantly better with clustered dot arrays compared to symbolic numbers or spread-out dot arrays.
  • Performance with symbolic numbers and spread-out dot arrays correlated with counting skill, unlike clustered dot arrays.

Conclusions:

  • The format of numerical stimuli critically impacts performance in children's number-line tasks.
  • Findings suggest distinct cognitive processes are engaged by different number representations, highlighting the role of mental number representation in symbolic tasks.